--- a/Architecture/System Overview.md
+++ b/Architecture/System Overview.md
@@ -5,7 +5,7 @@
 ## Core Layers
 
 1. **API Gateway** – handles authentication, routing, rate limiting
-2. **[[Agent Runtime]]** – orchestrates tool execution and context management
+2. **[[Execution Engine]]** – orchestrates tool execution and context management
 3. **Tool Registry** – plugin system for registering and discovering tools
 4. **Storage Layer** – conversation persistence and artifact storage
 
@@ -14,7 +14,7 @@
 ```
 Client Request
   → API Gateway (auth + routing)
-  → [[Agent Runtime]] (dispatch + context)
+  → [[Execution Engine]] (dispatch + context)
   → Tool Handler (execution)
   → Response Assembly
   → Client
@@ -23,5 +23,5 @@
 ## Design Principles
 
 - Each layer is independently deployable
-- The [[Agent Runtime]] is stateless; all state lives in the storage layer
+- The [[Execution Engine]] is stateless; all state lives in the storage layer
 - Tools are sandboxed and cannot access other tools' state directly