diff --git a/Tools/LyTestTools/ly_test_tools/__init__.py b/Tools/LyTestTools/ly_test_tools/__init__.py
index 58340342ab..972e97d488 100755
--- a/Tools/LyTestTools/ly_test_tools/__init__.py
+++ b/Tools/LyTestTools/ly_test_tools/__init__.py
@@ -16,7 +16,7 @@ ALL_PLATFORM_OPTIONS = ['android', 'ios', 'linux', 'mac', 'windows']
 ALL_LAUNCHER_OPTIONS = ['android', 'base', 'linux', 'mac', 'windows', 'windows_editor', 'windows_dedicated', 'windows_generic']
 ANDROID = False
 IOS = False  # Not implemented - see SPEC-2505
-LINUX = sys.platform.startswith('linux')  # Not implemented - see SPEC-2501
+LINUX = sys.platform.startswith('linux')
 MAC = sys.platform.startswith('darwin')
 WINDOWS = sys.platform.startswith('win')
 
@@ -54,9 +54,11 @@ elif LINUX:
     HOST_OS_PLATFORM = 'linux'
     HOST_OS_EDITOR = 'linux_editor'
     HOST_OS_DEDICATED_SERVER = 'linux_dedicated'
-    from ly_test_tools.launchers.platforms.linux.launcher import (LinuxLauncher, LinuxEditor, DedicatedLinuxLauncher)
+    HOST_OS_GENERIC_EXECUTABLE = 'linux_generic'
+    from ly_test_tools.launchers.platforms.linux.launcher import (LinuxLauncher, LinuxEditor, DedicatedLinuxLauncher, LinuxGenericLauncher)
     LAUNCHERS['linux'] = LinuxLauncher
     LAUNCHERS['linux_editor'] = LinuxEditor
     LAUNCHERS['linux_dedicated'] = DedicatedLinuxLauncher
+    LAUNCHERS['linux_generic'] = LinuxGenericLauncher
 else:
     logger.warning(f'WARNING: LyTestTools only supports Windows, Mac, and Linux. Unexpectedly detected HOST_OS_PLATFORM: "{HOST_OS_PLATFORM}".')
diff --git a/Tools/LyTestTools/ly_test_tools/_internal/managers/abstract_resource_locator.py b/Tools/LyTestTools/ly_test_tools/_internal/managers/abstract_resource_locator.py
index 77d58e3a48..fccc94bdcc 100755
--- a/Tools/LyTestTools/ly_test_tools/_internal/managers/abstract_resource_locator.py
+++ b/Tools/LyTestTools/ly_test_tools/_internal/managers/abstract_resource_locator.py
@@ -265,7 +265,7 @@ class AbstractResourceLocator(object):
         Return path to AssetProcessor's log file using the project bin dir
         :return: path to 'AP_Gui.log' file in <ap_log_dir> folder
         """
-        return os.path.join(self.ap_log_dir(), 'AP_Gui.log')
+        return os.path.join(self.ap_log_dir(), 'AP_GUI.log')
 
     def project_cache(self):
         """
diff --git a/Tools/LyTestTools/ly_test_tools/_internal/managers/platforms/linux.py b/Tools/LyTestTools/ly_test_tools/_internal/managers/platforms/linux.py
index cdbd379183..fea60cc9cb 100644
--- a/Tools/LyTestTools/ly_test_tools/_internal/managers/platforms/linux.py
+++ b/Tools/LyTestTools/ly_test_tools/_internal/managers/platforms/linux.py
@@ -23,9 +23,6 @@ class _LinuxResourceManager(AbstractResourceLocator):
     """
     Override for locating resources in a Linux operating system running LyTestTools.
     """
-    def __init__(self, build_directory: str, project: str):
-        pass
-
     def platform_config_file(self):
         """
         :return: path to the platform config file
diff --git a/Tools/LyTestTools/ly_test_tools/environment/process_utils.py b/Tools/LyTestTools/ly_test_tools/environment/process_utils.py
index 1c0be299a8..f8245495fa 100755
--- a/Tools/LyTestTools/ly_test_tools/environment/process_utils.py
+++ b/Tools/LyTestTools/ly_test_tools/environment/process_utils.py
@@ -31,45 +31,59 @@ def kill_processes_named(names, ignore_extensions=False):
     Kills all processes with a given name
 
     :param names: string process name, or list of strings of process name
-    :param ignore_extensions: ignore trailing file extension
+    :param ignore_extensions: ignore trailing file extensions. By default 'abc.exe' will not match 'abc'. Note that
+        enabling this will cause 'abc.exe' to match 'abc', 'abc.bat', and 'abc.sh', though 'abc.GameLauncher.exe'
+        will not match 'abc.DedicatedServer'
     """
     if not names:
         return
 
-    names = [names] if isinstance(names, str) else names
+    name_set = set()
+    if isinstance(names, str):
+        name_set.add(names)
+    else:
+        name_set.update(names)
 
     if ignore_extensions:
-        names = [_remove_extension(name) for name in names]
+        # both exact matches and extensionless
+        stripped_names = set()
+        for name in name_set:
+            stripped_names.add(_remove_extension(name))
+        name_set.update(stripped_names)
 
     # remove any blank names, which may empty the list
-    names = list(filter(lambda x: not x.isspace(), names))
-    if not names:
+    name_set = set(filter(lambda x: not x.isspace(), name_set))
+    if not name_set:
         return
 
-    logger.info(f"Killing all processes named {names}")
-    process_list_to_kill = []
+    logger.info(f"Killing all processes named {name_set}")
+    process_set_to_kill = set()
     for process in _safe_get_processes(['name', 'pid']):
         try:
             proc_name = process.name()
         except psutil.AccessDenied:
-            logger.info(f"Process {process} permissions error during kill_processes_named()", exc_info=True)
+            logger.warning(f"Process {process} permissions error during kill_processes_named()", exc_info=True)
             continue
         except psutil.ProcessLookupError:
-            logger.debug(f"Process {process} could not be killed during kill_processes_named() and was likely already stopped", exc_info=True)
+            logger.debug(f"Process {process} could not be killed during kill_processes_named() and was likely already "
+                         f"stopped", exc_info=True)
             continue
         except psutil.NoSuchProcess:
             logger.debug(f"Process '{process}' was active when list of processes was requested but it was not found "
                          f"during kill_processes_named()", exc_info=True)
             continue
 
-        if ignore_extensions:
-            proc_name = _remove_extension(proc_name)
+        if proc_name in name_set:
+            logger.debug(f"Found process with name {proc_name}.")
+            process_set_to_kill.add(process)
 
-        if proc_name in names:
-            logger.debug(f"Found process with name {proc_name}.  Attempting to kill...")
-            process_list_to_kill.append(process)
+        if ignore_extensions:
+            extensionless_name = _remove_extension(proc_name)
+            if extensionless_name in name_set:
+                process_set_to_kill.add(process)
 
-    _safe_kill_process_list(process_list_to_kill)
+    if process_set_to_kill:
+        _safe_kill_processes(process_set_to_kill)
 
 
 def kill_processes_started_from(path):
@@ -90,7 +104,7 @@ def kill_processes_started_from(path):
             if process_path.lower().startswith(path.lower()):
                 process_list.append(process)
 
-        _safe_kill_process_list(process_list)
+        _safe_kill_processes(process_list)
     else:
         logger.warning(f"Path:'{path}' not found")
 
@@ -118,7 +132,7 @@ def kill_processes_with_name_not_started_from(name, path):
                 logger.info("%s -> %s" % (os.path.dirname(process_path.lower()), path))
                 proccesses_to_kill.append(process)
 
-        _safe_kill_process_list(proccesses_to_kill)
+        _safe_kill_processes(proccesses_to_kill)
     else:
         logger.warning(f"Path:'{path}' not found")
 
@@ -151,10 +165,12 @@ def process_exists(name, ignore_extensions=False):
     :return: A boolean determining whether the process is alive or not
     """
     name = name.lower()
-    if ignore_extensions:
-        name = _remove_extension(name)
     if name.isspace():
         return False
+
+    if ignore_extensions:
+        name_extensionless = _remove_extension(name)
+
     for process in _safe_get_processes(["name"]):
         try:
             proc_name = process.name().lower()
@@ -165,10 +181,17 @@ def process_exists(name, ignore_extensions=False):
         except psutil.AccessDenied as e:
             logger.info(f"Permissions issue on {process} during process_exists check", exc_info=True)
             continue
-        if ignore_extensions:
-            proc_name = _remove_extension(proc_name)
-        if proc_name == name:
+
+        if proc_name == name:  # abc.exe matches abc.exe
             return True
+        if ignore_extensions:
+            proc_name_extensionless = _remove_extension(proc_name)
+            if proc_name_extensionless == name:  # abc matches abc.exe
+                return True
+            if proc_name == name_extensionless:  # abc.exe matches abc
+                return True
+            # don't check proc_name_extensionless against name_extensionless: abc.exe and abc.exe are already tested,
+            # however xyz.Gamelauncher should not match xyz.DedicatedServer
     return False
 
 
@@ -341,17 +364,14 @@ def _safe_kill_process(proc):
     except Exception:  # purposefully broad
         logger.warning("Unexpected exception while terminating process", exc_info=True)
 
-def _safe_kill_process_list(proc_list):
+
+def _safe_kill_processes(processes):
     """
     Kills a given process without raising an error
 
-    :param proc_list: The process list to kill
+    :param processes: An iterable of processes to kill
     """
-
-    def on_terminate(proc):
-        print(f"process '{proc.name()}' with id '{proc.pid}' terminated with exit code {proc.returncode}")
-
-    for proc in proc_list:
+    for proc in processes:
         try:
             logger.info(f"Terminating process '{proc.name()}' with id '{proc.pid}'")
             proc.kill()
@@ -360,12 +380,14 @@ def _safe_kill_process_list(proc_list):
         except psutil.NoSuchProcess:
             logger.debug("Termination request ignored, process was already terminated during iteration", exc_info=True)
         except Exception:  # purposefully broad
-            logger.warning("Unexpected exception while terminating process", exc_info=True)
+            logger.warning("Unexpected exception ignored while terminating process", exc_info=True)
 
+    def on_terminate(proc):
+        logger.info(f"process '{proc.name()}' with id '{proc.pid}' terminated with exit code {proc.returncode}")
     try:
-        psutil.wait_procs(proc_list, timeout=30, callback=on_terminate)
+        psutil.wait_procs(processes, timeout=30, callback=on_terminate)
     except Exception:  # purposefully broad
-        logger.warning("Unexpected exception while waiting for process to terminate", exc_info=True)
+        logger.warning("Unexpected exception while waiting for processes to terminate", exc_info=True)
 
 
 def _terminate_and_confirm_dead(proc):
@@ -383,7 +405,7 @@ def _terminate_and_confirm_dead(proc):
 
 def _remove_extension(filename):
     """
-    Returns a file name without its extension
+    Returns a file name without its extension, if any is present
 
     :param filename: The name of a file
     :return: The name of the file without the extension
@@ -465,3 +487,17 @@ def close_windows_process(pid, timeout=20, raise_on_missing=False):
     # Wait for asyncronous termination
     waiter.wait_for(lambda: pid not in psutil.pids(), timeout=timeout,
                     exc=TimeoutError(f"Process {pid} never terminated"))
+
+
+def get_display_env():
+    """
+    Fetches environment variables with an appropriate display (monitor) configured,
+      useful for subprocess calls to UI applications
+    :return: A dictionary containing environment variables (per os.environ)
+    """
+    env = os.environ.copy()
+    if not ly_test_tools.WINDOWS:
+        if 'DISPLAY' not in env.keys():
+            # assume Display 1 is available in another session
+            env['DISPLAY'] = ':1'
+    return env
diff --git a/Tools/LyTestTools/ly_test_tools/launchers/platforms/linux/launcher.py b/Tools/LyTestTools/ly_test_tools/launchers/platforms/linux/launcher.py
index 047e4fdeef..112629b349 100644
--- a/Tools/LyTestTools/ly_test_tools/launchers/platforms/linux/launcher.py
+++ b/Tools/LyTestTools/ly_test_tools/launchers/platforms/linux/launcher.py
@@ -13,6 +13,7 @@ import subprocess
 
 import ly_test_tools.environment.waiter
 import ly_test_tools.launchers.exceptions
+import ly_test_tools.environment.process_utils as process_utils
 
 from ly_test_tools.launchers.platforms.base import Launcher
 from ly_test_tools.launchers.exceptions import TeardownError, ProcessNotStartedError
@@ -68,7 +69,7 @@ class LinuxLauncher(Launcher):
         """
         command = [self.binary_path()] + self.args
         self._tmpout = TemporaryFile()
-        self._proc = subprocess.Popen(command, stdout=self._tmpout, stderr=self._tmpout, universal_newlines=True)
+        self._proc = subprocess.Popen(command, stdout=self._tmpout, stderr=self._tmpout, universal_newlines=True, env=process_utils.get_display_env())
         log.debug(f"Started Linux Launcher with command: {command}")
 
     def get_output(self, encoding="utf-8"):
@@ -221,3 +222,28 @@ class LinuxEditor(LinuxLauncher):
         """
         assert self.workspace.project is not None
         return os.path.join(self.workspace.paths.build_directory(), "Editor")
+
+
+class LinuxGenericLauncher(LinuxLauncher):
+
+    def __init__(self, build, exe_file_name, args=None):
+        super(LinuxLauncher, self).__init__(build, args)
+        self.exe_file_name = exe_file_name
+        self.expected_executable_path = os.path.join(
+            self.workspace.paths.build_directory(), f"{self.exe_file_name}")
+
+        if not os.path.exists(self.expected_executable_path):
+            raise ProcessNotStartedError(
+                f"Unable to locate executable '{self.exe_file_name}' "
+                f"in path: '{self.expected_executable_path}'")
+
+    def binary_path(self):
+        """
+        Return full path to the executable file for this build's configuration and project
+        Relies on the build_directory() in self.workspace.paths to be accurate
+
+        :return: full path to the given exe file
+        """
+        assert self.workspace.project is not None, (
+            'Project cannot be NoneType - please specify a project name string.')
+        return self.expected_executable_path
diff --git a/Tools/LyTestTools/ly_test_tools/o3de/asset_processor.py b/Tools/LyTestTools/ly_test_tools/o3de/asset_processor.py
index 57454930eb..0623715350 100644
--- a/Tools/LyTestTools/ly_test_tools/o3de/asset_processor.py
+++ b/Tools/LyTestTools/ly_test_tools/o3de/asset_processor.py
@@ -7,21 +7,22 @@ SPDX-License-Identifier: Apache-2.0 OR MIT
 A class to control functionality of Lumberyard's asset processor.
 The class manages a workspace's asset processor and asset configurations.
 """
-import os
-import datetime
 import logging
-import subprocess
-import socket
-import time
-import tempfile
+import os
+import psutil
 import shutil
+import socket
 import stat
+import subprocess
+import tempfile
+import time
+
 from typing import List, Tuple
-import psutil
 
 import ly_test_tools
-import ly_test_tools.environment.waiter as waiter
 import ly_test_tools.environment.file_system as file_system
+import ly_test_tools.environment.process_utils as process_utils
+import ly_test_tools.environment.waiter as waiter
 import ly_test_tools.o3de.pipeline_utils as utils
 from ly_test_tools.o3de.ap_log_parser import APLogParser
 
@@ -177,24 +178,26 @@ class AssetProcessor(object):
         """
         Read the a port chosen by AP from the log
         """
-        start_time = time.time()
-        read_port_timeout = 10
-        while (time.time() - start_time) < read_port_timeout:
+        port = None
+
+        def _get_port_from_log():
+            nonlocal port
             if not os.path.exists(self._workspace.paths.ap_gui_log()):
-                logger.debug(f"Log at {self._workspace.paths.ap_gui_log()} doesn't exist, sleeping")
-            else:
-                log = APLogParser(self._workspace.paths.ap_gui_log())
-                if len(log.runs):
-                    try:
-                        port = log.runs[-1][port_type]
-                        if port:
-                            logger.info(f"Read port type {port_type} : {port}")
-                            return port
-                    except Exception:  # intentionally broad
-                        pass
-            time.sleep(1)
-        logger.warning(f"Failed to read port type {port_type}")
-        return 0
+                return False
+
+            log = APLogParser(self._workspace.paths.ap_gui_log())
+            if len(log.runs):
+                try:
+                    port = log.runs[-1][port_type]
+                    logger.debug(f"Read port type {port_type} : {port}")
+                    return True
+                except Exception as ex:  # intentionally broad
+                    logger.debug("Failed to read port from file", exc_info=ex)
+            return False
+
+        err = AssetProcessorError(f"Failed to read port type {port_type} from {self._workspace.paths.ap_gui_log()}")
+        waiter.wait_for(_get_port_from_log, timeout=10, exc=err)
+        return port
 
     def set_control_connection(self, connection):
         self._control_connection = connection
@@ -206,13 +209,8 @@ class AssetProcessor(object):
         """
         if not self._control_connection:
             control_timeout = 60
-            try:
-                return self.connect_socket("Control Connection", self.read_control_port,
-                                           set_port_method=self.set_control_connection, timeout=control_timeout)
-            except AssetProcessorError as e:
-                # We dont want a failure of our test socket connection to fail the entire test automatically.
-                logger.error(f"Failed to connect control socket with error {e}")
-                pass
+            return self.connect_socket("Control Connection", self.read_control_port,
+                                       set_port_method=self.set_control_connection, timeout=control_timeout)
         return True, None
 
     def using_temp_workspace(self):
@@ -227,34 +225,40 @@ class AssetProcessor(object):
         :param set_port_method: If set, method to call with the established connection
         :param timeout: Max seconds to attempt connection for
         """
-
-        connection_timeout = timeout
         connect_port = read_port_method()
-        logger.debug(f"Waiting for connection to AP {port_name}: {host}:{connect_port}, "
-                     f"{connection_timeout} seconds remaining")
-        start_time = time.time()
-        while (time.time() - start_time) < connection_timeout:
+        logger.debug(f"Attempting to for connect to AP {port_name}: {host}:{connect_port} for {timeout} seconds")
+
+        def _attempt_connection():
+            nonlocal connect_port
+            if self._ap_proc.poll() is not None:
+                raise AssetProcessorError(f"Asset processor exited early with errorcode: {self._ap_proc.returncode}")
+
             connection_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
-            connection_socket.settimeout(10.0)
+            connection_socket.settimeout(timeout)
             try:
                 connection_socket.connect((host, connect_port))
                 logger.debug(f"Connection to AP {port_name} was successful")
                 if set_port_method is not None:
                     set_port_method(connection_socket)
-                return True, None
-            except Exception:  # Purposefully broad
-                # Short delay to prevent immediate failure due to slower starting applications such as debug builds
-                time.sleep(0.01)
+                return True
+            except Exception as ex:  # Purposefully broad
+                logger.debug(f"Failed to connect to {host}:{connect_port}", exc_info=ex)
                 if not connect_port or not self.using_temp_workspace():
                     # If we're not using a temp workspace with a fresh log it's possible we're reading a port from
                     # a previous run and the log just hasn't written yet, we need to keep checking the log for a new
                     # port to use
-                    new_connect_port = read_port_method()
-                    if new_connect_port != connect_port:
-                        logger.debug(
-                            f"Read new connect port for {port_name}: {host}:{new_connect_port}")
-                        connect_port = new_connect_port
-        raise AssetProcessorError(f"Could not connect to AP {port_name}")
+                    try:
+                        new_connect_port = read_port_method()
+                        if new_connect_port != connect_port:
+                            logger.debug(f"Found new connect port for {port_name}: {host}:{new_connect_port}")
+                            connect_port = new_connect_port
+                    except Exception as read_exception:  # Purposefully broad
+                        logger.debug(f"Failed to read port data", exc_info=read_exception)
+            return False
+
+        err = AssetProcessorError(f"Could not connect to AP {port_name} on {host}:{connect_port}")
+        waiter.wait_for(_attempt_connection, timeout=timeout, exc=err)
+        return True, None
 
     def stop(self, timeout=60):
         """
@@ -436,15 +440,14 @@ class AssetProcessor(object):
                     extra_params=None, add_gem_scan_folders=None, add_config_scan_folders=None, decode=True,
                     expect_failure=False, quitonidle=False, connect_to_ap=False, accept_input=True, run_until_idle=True,
                     scan_folder_pattern=None):
-        ap_path = self._workspace.paths.asset_processor()
+        ap_path = os.path.abspath(self._workspace.paths.asset_processor())
+        ap_exe_path = os.path.dirname(ap_path)
         extra_gui_params = []
         if quitonidle:
             extra_gui_params.append("--quitonidle")
         if accept_input:
             extra_gui_params.append("--acceptInput")
 
-        ap_exe_path = os.path.dirname(self._workspace.paths.asset_processor())
-
         logger.info("Starting asset processor")
         if self.process_exists():
             logger.error("Asset processor already started.  Stop first")
@@ -483,20 +486,30 @@ class AssetProcessor(object):
             logger.warning(f"Cannot capture output when leaving AP connection open.")
 
         logger.info(f"Launching AP with command: {command}")
-        self._ap_proc = subprocess.Popen(command, cwd=ap_exe_path)
-
-        if accept_input and not quitonidle:
-            self.connect_control()
-
-        if connect_to_ap:
-            self.connect_listen()
-
-        if quitonidle:
-            waiter.wait_for(lambda: not self.process_exists(), timeout=timeout)
-        elif run_until_idle and accept_input:
-            if not self.wait_for_idle():
-                return False, None
-        return True, None
+        try:
+            self._ap_proc = subprocess.Popen(command, cwd=ap_exe_path, env=process_utils.get_display_env())
+
+            if accept_input:
+                self.connect_control()
+
+            if connect_to_ap:
+                self.connect_listen()
+
+            if quitonidle:
+                waiter.wait_for(lambda: not self.process_exists(), timeout=timeout,
+                                exc=AssetProcessorError(f"Failed to quit on idle within {timeout} seconds"))
+            elif run_until_idle and accept_input:
+                if not self.wait_for_idle():
+                    return False, None
+            return True, None
+        except BaseException as be:  # purposefully broad
+            logger.exception("Exception while starting Asset Processor", be)
+            # clean up to avoid leaking open AP process to future tests
+            try:
+                self._ap_proc.kill()
+            except Exception as ex:
+                logger.exception("Ignoring exception while trying to terminate Asset Processor", ex)
+            raise  # raise whatever prompted us to clean up
 
     def connect_listen(self, timeout=DEFAULT_TIMEOUT_SECONDS):
         # Wait for the AP we launched to be ready to accept a connection
@@ -574,21 +587,17 @@ class AssetProcessor(object):
                                expect_failure=False):
         """
         In case of a timeout, the asset processor and associated processes are killed and the function returns False.
-        
+
         :param timeout: seconds to wait before aborting
         :param capture_output = Capture output which will be returned in the second of the return pair
         :param decode: decode byte strings from captured output to utf-8
         :param expect_failure: asset processing is expected to fail, so don't error on a failure, and assert on no failure.
         """
         logger.info(f"Launching AP with command: {command}")
-        start = datetime.datetime.now()
-        try:
-            duration = datetime.timedelta(seconds=timeout)
-        except TypeError:
-            logger.warning("Cannot set timeout value of '{}' seconds, defaulting to {} hours".format(
-                timeout, DEFAULT_TIMEOUT_HOURS))
-            duration = datetime.timedelta(hours=DEFAULT_TIMEOUT_HOURS)
-            timeout = duration.total_seconds()
+        start = time.time()
+        if type(timeout) not in [int, float] or timeout < 1:
+            logger.warning(f"Invalid timeout {timeout} - defaulting to {DEFAULT_TIMEOUT_SECONDS} seconds")
+            timeout = DEFAULT_TIMEOUT_SECONDS
 
         run_result = subprocess.run(command, close_fds=True, timeout=timeout, capture_output=capture_output)
         output_list = None
@@ -609,8 +618,7 @@ class AssetProcessor(object):
         elif expect_failure:
             logger.error(f"{command} was expected to fail, but instead ran without failure.")
             return True, output_list
-        logger.info(
-            f"{command} completed successfully in {(datetime.datetime.now() - start).seconds} seconds")
+        logger.info(f"{command} completed successfully in {time.time() - start} seconds")
         return True, output_list
 
     def set_failure_log_folder(self, log_root):
@@ -743,14 +751,14 @@ class AssetProcessor(object):
         :return: Absolute path of added scan folder
         """
         if os.path.isabs(folder_name):
-            if not folder_name in self._override_scan_folders:
+            if folder_name not in self._override_scan_folders:
                 self._override_scan_folders.append(folder_name)
                 logger.info(f'Adding override scan folder {folder_name}')
             return folder_name
         else:
             if not self._temp_asset_root:
-                logger.warning(f"Can't create scan folder, no temporary asset workspace has been created")
-                return
+                logger.warning(f"Can not create scan folder, no temporary asset workspace has been created")
+                return ""
             scan_folder = os.path.join(self._temp_asset_root if self._temp_asset_root else self._workspace.paths.engine_root(),
                                        folder_name)
             if not os.path.isdir(scan_folder):
@@ -802,9 +810,9 @@ class AssetProcessor(object):
         if not use_current_root:
             self.create_temp_asset_root()
         test_asset_root = os.path.join(self._temp_asset_root, self._workspace.project if relative_asset_root is None
-        else relative_asset_root)
+                                       else relative_asset_root)
         test_folder = os.path.join(test_asset_root, function_name if existing_function_name is None
-        else existing_function_name)
+                                   else existing_function_name)
         if not os.path.isdir(test_folder):
             os.makedirs(test_folder)
         if add_scan_folder:
diff --git a/Tools/LyTestTools/ly_test_tools/o3de/asset_processor_utils.py b/Tools/LyTestTools/ly_test_tools/o3de/asset_processor_utils.py
index 34ea5f4eb8..f30ed2f233 100644
--- a/Tools/LyTestTools/ly_test_tools/o3de/asset_processor_utils.py
+++ b/Tools/LyTestTools/ly_test_tools/o3de/asset_processor_utils.py
@@ -9,8 +9,7 @@ import logging
 import os
 import subprocess
 
-import ly_test_tools
-from ly_test_tools.environment.process_utils import kill_processes_named as kill_processes_named
+import ly_test_tools.environment.process_utils as process_utils
 
 logger = logging.getLogger(__name__)
 
@@ -23,7 +22,7 @@ def start_asset_processor(bin_dir):
     :return: A subprocess.Popen object for the AssetProcessor process.
     """
     os.chdir(bin_dir)
-    asset_processor = subprocess.Popen(['AssetProcessor.exe'])
+    asset_processor = subprocess.Popen(['AssetProcessor'], env=process_utils.get_display_env())
     return_code = asset_processor.poll()
 
     if return_code is not None and return_code != 0:
@@ -40,11 +39,9 @@ def kill_asset_processor():
 
     :return: None
     """
-    
-    kill_processes_named('AssetProcessor_tmp', ignore_extensions=True)
-    kill_processes_named('AssetProcessor', ignore_extensions=True)
-    kill_processes_named('AssetProcessorBatch', ignore_extensions=True)
-    kill_processes_named('AssetBuilder', ignore_extensions=True)
-    kill_processes_named('rc', ignore_extensions=True)
-    kill_processes_named('Lua Editor', ignore_extensions=True)
-
+    process_utils.kill_processes_named('AssetProcessor_tmp', ignore_extensions=True)
+    process_utils.kill_processes_named('AssetProcessor', ignore_extensions=True)
+    process_utils.kill_processes_named('AssetProcessorBatch', ignore_extensions=True)
+    process_utils.kill_processes_named('AssetBuilder', ignore_extensions=True)
+    process_utils.kill_processes_named('rc', ignore_extensions=True)
+    process_utils.kill_processes_named('Lua Editor', ignore_extensions=True)
diff --git a/Tools/LyTestTools/tests/integ/sanity_tests.py b/Tools/LyTestTools/tests/integ/sanity_tests.py
index e27398c477..2e46d822c7 100755
--- a/Tools/LyTestTools/tests/integ/sanity_tests.py
+++ b/Tools/LyTestTools/tests/integ/sanity_tests.py
@@ -63,7 +63,6 @@ class TestAutomatedTestingProject(object):
             # Clean up processes after the test is finished
             process_utils.kill_processes_named(names=process_utils.LY_PROCESS_KILL_LIST, ignore_extensions=True)
 
-    @pytest.mark.skipif(not ly_test_tools.WINDOWS, reason="Editor currently only functions on Windows")
     def test_StartEditor_Sanity(self, project):
         """
         The `test_StartEditor_Sanity` test function is similar to the previous example with minor adjustments. A
@@ -86,7 +85,7 @@ class TestAutomatedTestingProject(object):
             # Call the Editor executable
             with editor.start():
                 # Wait for the process to exist
-                waiter.wait_for(lambda: process_utils.process_exists("Editor", ignore_extensions=True))
+                waiter.wait_for(lambda: process_utils.process_exists("Editor.exe", ignore_extensions=True))
         finally:
             # Clean up processes after the test is finished
             process_utils.kill_processes_named(names=process_utils.LY_PROCESS_KILL_LIST, ignore_extensions=True)
diff --git a/Tools/LyTestTools/tests/unit/test_asset_processor.py b/Tools/LyTestTools/tests/unit/test_asset_processor.py
index f487cc8537..aabbf2f2f5 100755
--- a/Tools/LyTestTools/tests/unit/test_asset_processor.py
+++ b/Tools/LyTestTools/tests/unit/test_asset_processor.py
@@ -58,10 +58,8 @@ class TestAssetProcessor(object):
         under_test.start(connect_to_ap=True)
 
         assert under_test._ap_proc is not None
-        mock_popen.assert_called_once_with([mock_ap_path, '--zeroAnalysisMode',
-                                            f'--regset="/Amazon/AzCore/Bootstrap/project_path={mock_project_path}"',
-                                            '--logDir', under_test.log_root(),
-                                            '--acceptInput', '--platforms', 'bar'], cwd=os.path.dirname(mock_ap_path))
+        mock_popen.assert_called_once()
+        assert '--zeroAnalysisMode' in mock_popen.call_args[0][0]
         mock_connect.assert_called()
 
     @mock.patch('ly_test_tools._internal.managers.workspace.AbstractWorkspaceManager')
@@ -114,7 +112,7 @@ class TestAssetProcessor(object):
 
         assert result
         mock_run.assert_called_once_with([apb_path,
-                                          f'--regset="/Amazon/AzCore/Bootstrap/project_path={mock_project_path}"', 
+                                          f'--regset="/Amazon/AzCore/Bootstrap/project_path={mock_project_path}"',
                                           '--logDir', under_test.log_root()],
                                          close_fds=True, capture_output=False,
                                          timeout=1)
@@ -150,10 +148,8 @@ class TestAssetProcessor(object):
         result, _ = under_test.batch_process(None, False)
 
         assert not result
-        mock_run.assert_called_once_with([apb_path,
-                                          f'--regset="/Amazon/AzCore/Bootstrap/project_path={mock_project_path}"',
-                                          '--logDir', under_test.log_root()],
-                                         close_fds=True, capture_output=False, timeout=28800.0)
+        mock_run.assert_called_once()
+        assert f'--regset="/Amazon/AzCore/Bootstrap/project_path={mock_project_path}"' in mock_run.call_args[0][0]
 
 
     @mock.patch('ly_test_tools._internal.managers.workspace.AbstractWorkspaceManager')
diff --git a/Tools/LyTestTools/tests/unit/test_process_utils.py b/Tools/LyTestTools/tests/unit/test_process_utils.py
index de40fb8e34..bd6a79fb09 100755
--- a/Tools/LyTestTools/tests/unit/test_process_utils.py
+++ b/Tools/LyTestTools/tests/unit/test_process_utils.py
@@ -223,7 +223,7 @@ class TestCloseWindowsProcess(unittest.TestCase):
         mock_enum.assert_called_once()
 
 
-class Test(unittest.TestCase):
+class TestProcessMatching(unittest.TestCase):
 
     @mock.patch("ly_test_tools.environment.process_utils._safe_get_processes")
     def test_ProcExists_HasExtension_Found(self, mock_get_proc):
@@ -261,18 +261,55 @@ class Test(unittest.TestCase):
         self.assertTrue(result)
         proc_mock.name.assert_called()
 
-    @mock.patch('ly_test_tools.environment.process_utils._safe_kill_process', mock.MagicMock)
+    @mock.patch('ly_test_tools.environment.process_utils._safe_kill_processes')
     @mock.patch('ly_test_tools.environment.process_utils._safe_get_processes')
-    def test_KillProcNamed_MockKill_SilentSuccess(self, mock_get_proc):
+    def test_KillProcNamed_ExactMatch_Killed(self, mock_get_proc, mock_kill_proc):
+        name = "dummy.exe"
+        proc_mock = mock.MagicMock()
+        proc_mock.name.return_value = name
+        mock_get_proc.return_value = [proc_mock]
+
+        process_utils.kill_processes_named("dummy.exe", ignore_extensions=False)
+        mock_kill_proc.assert_called()
+        proc_mock.name.assert_called()
+
+    @mock.patch('ly_test_tools.environment.process_utils._safe_kill_processes')
+    @mock.patch('ly_test_tools.environment.process_utils._safe_get_processes')
+    def test_KillProcNamed_NearMatch_Ignore(self, mock_get_proc, mock_kill_proc):
+        name = "dummy.exe"
+        proc_mock = mock.MagicMock()
+        proc_mock.name.return_value = name
+        mock_get_proc.return_value = [proc_mock]
+
+        process_utils.kill_processes_named("dummy", ignore_extensions=False)
+        mock_kill_proc.assert_not_called()
+        proc_mock.name.assert_called()
+
+    @mock.patch('ly_test_tools.environment.process_utils._safe_kill_processes')
+    @mock.patch('ly_test_tools.environment.process_utils._safe_get_processes')
+    def test_KillProcNamed_NearMatchIgnoreExtension_Kill(self, mock_get_proc, mock_kill_proc):
         name = "dummy.exe"
         proc_mock = mock.MagicMock()
         proc_mock.name.return_value = name
         mock_get_proc.return_value = [proc_mock]
 
         process_utils.kill_processes_named("dummy", ignore_extensions=True)
+        mock_kill_proc.assert_called()
+        proc_mock.name.assert_called()
+
+    @mock.patch('ly_test_tools.environment.process_utils._safe_kill_processes')
+    @mock.patch('ly_test_tools.environment.process_utils._safe_get_processes')
+    def test_KillProcNamed_ExactMatchIgnoreExtension_Killed(self, mock_get_proc, mock_kill_proc):
+        name = "dummy.exe"
+        proc_mock = mock.MagicMock()
+        proc_mock.name.return_value = name
+        mock_get_proc.return_value = [proc_mock]
+
+        process_utils.kill_processes_named("dummy.exe", ignore_extensions=True)
+        mock_kill_proc.assert_called()
         proc_mock.name.assert_called()
 
-    @mock.patch('ly_test_tools.environment.process_utils._safe_kill_process', mock.MagicMock)
+    @mock.patch('ly_test_tools.environment.process_utils._safe_kill_processes', mock.MagicMock)
     @mock.patch('ly_test_tools.environment.process_utils._safe_get_processes')
     @mock.patch('os.path.exists')
     def test_KillProcFrom_MockKill_SilentSuccess(self, mock_path, mock_get_proc):
@@ -293,7 +330,7 @@ class Test(unittest.TestCase):
 
         mock_kill.assert_called()
 
-    @mock.patch('ly_test_tools.environment.process_utils._safe_kill_process', mock.MagicMock)
+    @mock.patch('ly_test_tools.environment.process_utils._safe_kill_processes', mock.MagicMock)
     @mock.patch('psutil.Process')
     def test_KillProcPid_NoProc_SilentPass(self, mock_psutil):
         mock_proc = mock.MagicMock()
@@ -302,7 +339,7 @@ class Test(unittest.TestCase):
 
         process_utils.kill_process_with_pid(1)
 
-    @mock.patch('ly_test_tools.environment.process_utils._safe_kill_process', mock.MagicMock)
+    @mock.patch('ly_test_tools.environment.process_utils._safe_kill_processes', mock.MagicMock)
     @mock.patch('psutil.Process')
     def test_KillProcPidRaiseOnMissing_NoProc_Raises(self, mock_psutil):
         mock_proc = mock.MagicMock()
@@ -339,7 +376,7 @@ class Test(unittest.TestCase):
         mock_wait_procs.side_effect = psutil.PermissionError()
         proc_mock = mock.MagicMock()
 
-        process_utils._safe_kill_process_list(proc_mock)
+        process_utils._safe_kill_processes(proc_mock)
 
         mock_wait_procs.assert_called()
         mock_log_warn.assert_called()