This document discusses setting up Continuous Integration using SalesforceDX and Jenkins. It covers: 1. The problem of long, complex builds and the need to reduce time from development to production. 2. An overview of Jenkins and why it is used for Continuous Integration, including that it is open source and has over 1000 plugins. 3. The history and evolution of Jenkins from its origins in Hudson to becoming the dominant CI tool today. 4. The concepts of Continuous Integration, Continuous Delivery, and Continuous Deployment and how branching strategies fit in. 5. A demo of setting up Jenkins and SFDX for Continuous Integration, including creating certificates, connected apps, environment variables, and Jenkins projects