Modern software development has been revolutionized by first agile methodologies and then what can be called the continuation of agile from development into operations: DevOps. Where continuous integration (CI) and continuous testing are central to agile, bringing in automation to reduce human error, improve efficiency, and speed up many chores in the development process, the same can be said of continuous delivery (CD) being a central part of DevOps. Tool automation is important in supporting the radical changes that agile and DevOps bring to software development.