Documentation

README.md

@@ -27,11 +27,11 @@ The minimum activities required for CD are:
   pipeline](https://www.informit.com/articles/article.aspx?p=1621865&seqNum=2#:~:text=%EE%94%80Buy-,What%20Is%20a%20Deployment%20Pipeline%3F,-At%20an%20abstract)
   is the only path to deploy to production and should be [definitive for deploy](./faq.md#why-should-the-pipeline-be-definitive-for-deploy)
 - [Always meets the organization's definition of deployable](https://www.youtube.com/watch?v=bHKHdp4H-8w)
-- Immutable artifact. No human changes after commit.
+- [Immutable artifact(./faq#what-is-an-immutable-artifact). No human changes after commit.
 - All feature work stops when the pipeline is red
 - Production-like test environment
 - Rollback on-demand
-- [Application configuration](./faq.md) deploys with artifact 
+- [Application configuration](./faq.md#what-is-application-configuration) deploys with artifact 
 
 ## Continuous Integration
 

faq.md

@@ -44,4 +44,12 @@ Dave Farley
 
 ## What is Application Configuration?
 
-The term "Configuration" is overused and underdefined across the industry.  We embrace [The Twelve-Factor App config](https://12factor.net/config) definitions where "config" is environment specific (varies by deployment) and "application config" is internal to the app and does NOT vary by environment.
+The term "Configuration" is overused and underdefined across the industry.  We embrace [The Twelve-Factor App
+config](https://12factor.net/config) definitions where "config" is environment specific (varies by deployment) and
+"application config" is internal to the app and does NOT vary by environment.
+
+## What is an immutable artifact?
+
+Central to CD is that we are validating the delivered artifact with the pipeline. It is built once and deployed to all
+environments. A common anti-pattern is building an artifact for each environment. This is why trunk-based development is
+so important.