If you already have a working application, you might transform it into a set of microservices, but you have to keep the application running at the highest rate and prevent any interruptions.

To do this, you can create microservices step by step, starting from the least important task. In our example, it's better to start from email activities and logging. This practice helps you to create a DevOps process from scratch and join it with the maintenance process of your app.