diff --git a/DigitalData.Core.Abstractions/Factory.cs b/DigitalData.Core.Abstractions/Factory.cs
index 7ac6771..f9d2921 100644
--- a/DigitalData.Core.Abstractions/Factory.cs
+++ b/DigitalData.Core.Abstractions/Factory.cs
@@ -16,6 +16,14 @@ namespace DigitalData.Core.Abstractions
 
         private bool IsBuilt => _lazyServiceProvider.IsValueCreated;
 
+        private PostBuildBehavior _pbBehavior = PostBuildBehavior.ThrowException;
+
+        public Factory BehaveOnPostBuild(PostBuildBehavior postBuildBehavior)
+        {
+            _pbBehavior = postBuildBehavior;
+            return this;
+        }
+
         public Factory()
         {
             _lazyServiceProvider = new Lazy<IServiceProvider>(() => _serviceCollection.BuildServiceProvider());
@@ -42,7 +50,8 @@ namespace DigitalData.Core.Abstractions
             get => _serviceCollection[index];
             set
             {
-                EnsureNotBuilt();
+                if (EnsureBuilt())
+                    return;
                 _serviceCollection[index] = value;
             }
         }
@@ -54,25 +63,29 @@ namespace DigitalData.Core.Abstractions
 
         public void Insert(int index, ServiceDescriptor item)
         {
-            EnsureNotBuilt();
+            if (EnsureBuilt())
+                return;
             _serviceCollection.Insert(index, item);
         }
 
         public void RemoveAt(int index)
         {
-            EnsureNotBuilt();
+            if (EnsureBuilt())
+                return;
             _serviceCollection.RemoveAt(index);
         }
 
         public void Add(ServiceDescriptor item)
         {
-            EnsureNotBuilt();
+            if (EnsureBuilt())
+                return;
             _serviceCollection.Add(item);
         }
 
         public void Clear()
         {
-            EnsureNotBuilt();
+            if (EnsureBuilt())
+                return;
             _serviceCollection.Clear();
         }
 
@@ -88,7 +101,8 @@ namespace DigitalData.Core.Abstractions
 
         public bool Remove(ServiceDescriptor item)
         {
-            EnsureNotBuilt();
+            if (EnsureBuilt())
+                return false;
             return _serviceCollection.Remove(item);
         }
 
@@ -104,11 +118,23 @@ namespace DigitalData.Core.Abstractions
         #endregion
 
         #region Helpers
-        private void EnsureNotBuilt()
+        private bool EnsureBuilt()
         {
             if (IsBuilt)
-                throw new InvalidOperationException("Service provider has already been built. No further service modifications are allowed.");
+            {
+                return _pbBehavior == PostBuildBehavior.ThrowException
+                    ? throw new InvalidOperationException("Service provider has already been built. No further service modifications are allowed.")
+                    : true;
+            }
+            else
+                return false;
         }
         #endregion
     }
+
+    public enum PostBuildBehavior
+    {
+        ThrowException,
+        Ignore
+    }
 }
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