Layered architecture is the first architectural pattern that we are going to explore. If you haven’t read my article about software architecture, I suggest you do it before continuing with this one. What is a layered architecture? Simply put, the layered architecture pattern’s main idea is to group and isolate system concerns while defining strict communication direction between them. Each group of related modules/classes we call layer. Different layers are encapsulated and depend on each other through abstraction and well-defined interfaces. Layers in this architecture pattern are stacked. The request direction is from the upper layers to the lower layers.…

In this series of posts, I will introduce you to the most popular software architecture types. But before we delve into the most common variants, let us talk about software architecture itself. What is software architecture? It is tough to write simply for such a complex topic as software architecture but let me try my best. A software system is made up of individual elements. Elements could be databases, application servers, message brokers, load balancers, etc. Each element has its properties and characteristics. Between these elements, there are relationships. The way we structure these elements and their relationships, we call…