CFML-Development-Guide.md

@@ -4,7 +4,19 @@ This document governs best practices for writing CFML for inLeague applications
 
 # Table of Contents
 
-1. [Writing API Endpoints](#writing-api-endpoints)
+1. [Function Architecture: Handlers, Services, Models](#function-architecture)
+2. [Writing API Endpoints](#writing-api-endpoints)
+
+## Function Architecture
+
+Handlers' job is to handle input. Their job is not to apply business rules, or even be aware of business rules. They are concerned with:
+
+* processing incoming data in the request scope
+* either validating the request or else referring the request collection to a validation layer 
+* referring the validated request to the business object responsible for Doing The Thing
+* returning or rendering a result to satisfy the request
+
+(TODO)
 
 ## Writing API Endpoints