What’s it all mean?
Continuous Integration lets lots of people work on one project at the same time, while merging their work together in a central place regularly. This maintains the most recent version, so everyone is checking in or out only the latest code.
Continuous Delivery means that when the continuously integrated code is tested and accepted, it gets pushed out to customers. The customers can then choose to manually deploy it or not.
Continuous Deployment means that same continuously integrated code is pushed out after testing and accepting, except that it gets automatically deployed for the customers.
What’s the difference?
Without continuous integration, you can’t have continuous delivery or continuous deployment. Simply put, continuous delivery and continuous deployment provide the product built with continuous integration.
You should! Since continuous integration, delivery, and deployment keep code clean and bug-free, it means you get your features faster, cleaner, and more successfully.