In the modern world, speed is a decisive factor of success for applications and products. The competition has become fierce and every company has to release new features as fast as possible.
For microservice developers, this means we need a continuous process for building and delivering new versions of our products to be timely and competitive. In terms of software, this means you need to automate this process—maybe a special product or a set of scripts. Fortunately, this class of products already exists; called CI tools.