diff --git a/src/main/python/ddadevops/domain/__init__.py b/src/main/python/ddadevops/domain/__init__.py
index f6bf5e2..8eaba18 100644
--- a/src/main/python/ddadevops/domain/__init__.py
+++ b/src/main/python/ddadevops/domain/__init__.py
@@ -1,4 +1,4 @@
 from .common import Validateable, DnsRecord, Devops
 from .image import Image
 from .c4k import C4k
-from .release_config import ReleaseConfig
\ No newline at end of file
+from .release import Release, ReleaseConfig, ReleaseType, Version, EnvironmentKeys
\ No newline at end of file
diff --git a/src/main/python/ddadevops/release_mixin/domain.py b/src/main/python/ddadevops/domain/release.py
similarity index 85%
rename from src/main/python/ddadevops/release_mixin/domain.py
rename to src/main/python/ddadevops/domain/release.py
index 4ad8822..8d57dfb 100644
--- a/src/main/python/ddadevops/release_mixin/domain.py
+++ b/src/main/python/ddadevops/domain/release.py
@@ -1,6 +1,10 @@
-# TODO: jem, zam - 2023_04_18: Mv this to src/main/python/ddadevops/domain/release.py
 from enum import Enum
 from pathlib import Path
+from .common import (
+    filter_none,
+    Validateable,
+    Devops,
+)
 
 class ReleaseType(Enum):
     MAJOR = 0
@@ -58,7 +62,21 @@ class Version():
         bump_version.increment(ReleaseType.BUMP)
         return bump_version
 
-# TODO: jem, zam - 2023_04_18: xtend abstract validateable
+class ReleaseConfig(Validateable):
+    def __init__(
+        self,
+        main_branch: str,
+        config_file: str,
+        devops: Devops,
+        release_version: str = None, 
+        bump_version: str = None
+    ):
+        self.main_branch = main_branch
+        self.config_file = config_file
+        self.release_version = release_version
+        self.bump_version = bump_version 
+        self.devops = devops
+
 class Release():
     def __init__(self, release_type: ReleaseType, version: Version, current_branch: str):
         self.release_type = release_type
diff --git a/src/main/python/ddadevops/domain/release_config.py b/src/main/python/ddadevops/domain/release_config.py
deleted file mode 100644
index f919aff..0000000
--- a/src/main/python/ddadevops/domain/release_config.py
+++ /dev/null
@@ -1,22 +0,0 @@
-from typing import Optional
-from .common import (
-    filter_none,
-    Validateable,
-    Devops,
-)
-
-class ReleaseConfig(Validateable):
-    def __init__(
-        self,
-        main_branch: str,
-        config_file: str,
-        devops: Devops,
-        release_version: str = None, 
-        bump_version: str = None
-    ):
-        self.main_branch = main_branch
-        self.config_file = config_file
-        self.release_version = release_version
-        self.bump_version = bump_version 
-        self.devops = devops
-        
\ No newline at end of file
diff --git a/src/main/python/ddadevops/release_mixin/__init__.py b/src/main/python/ddadevops/release_mixin/__init__.py
deleted file mode 100644
index e69de29..0000000