This document discusses how to use Azure App Service to implement continuous delivery. It defines continuous delivery as constantly developing, automatically building, and automatically deploying software. Azure App Service offers advantages like abstracting away IIS management and enabling easy creation of multiple hosting environments. The document recommends establishing deployment slots for different environments like development, QA, staging, and production. It describes how continuous delivery with App Service works by automatically building and deploying code when it is checked into source control like Kudu. The document also provides tips for handling continuous delivery of multiple sites in one project.