Microservices architecture

Containers bring application deployment to a whole new level by introducing microservices architecture. What it essentially means is that, if you have a monolith or N-tier application, it usually has many different services communicating with each other. Containerizing your services allows you to break down your application into multiple pieces and work with each of them independently. Let's say you have a standard application that consists of a web server, application, and database. You can probably put it on one or three different servers, three different VMs, or three simple containers, running each part of this application. All these options require a different amount of effort, time, and resources. Later in this book, you will see how simple it is to do using containers.