This document discusses the process of continuous deployment at a company with 25 million members and 900,000 shops. It outlines the challenges of initial development and launch cycles, and how the company evolved to integrate experimentation and continuous deployment. Key tools discussed include a launch calendar to track launches, automated emails, and Catapult, a unified launch management tool that integrated experiment configuration, branching in code, and communications. The overall message is that continuous integration and deployment allows for faster iteration, more feedback, and better communication through integrated tools and processes.