Shopify Apps - Overview & Build an example app

Part of my Shopify Learning Series

Shopify apps are written by trusted 3rd party dev that allow :
- Add features to enhance buying experience for customers
- Enhance merchant admin dashboard or PoS
- Integrate w/ 3rd party services

Notes: https://docs.google.com/document/d/1CXQa1YUN1lNyVTawdlA_BwxQD_impPLpmBjZTJz9owo/edit?usp=sharing