In recent years the IT industry succeeded in drastically increasing productivity and speed of delivery. They did so through inventing and improving Agile development methods such as Scrum as well as Devops. This made Continuous Delivery and Continuous Integration possible.
Modern software development shops deliver features rather than application releases. Features are the output of the software development process and feature velocity is its paramount nonfunctional requirement. Agile software development and deployment methods are dedicated to optimize feature velocity.