The back-end server that contains your business logic. This include database architecture and a Restful API server. Some common features are Authentications, monetization, user roles. One of the main focuses is to create a good foundation on which other developers could also build upon easily and is flexible to business pivots or new needs.

The Client contains UI that interacts with the Backend business logic. This contains the UI and logic needed to make the use of the site as convenient as possible for the user. Some additional parts that can be integrated are analytics tools (to see where your customers get stuck or abandon the flow), visualizations, animations. The BE server is made in a way that new FE clients can be added to it if a specialized UI is needed

Getting your app running and in front of the eyes of your clients. We take into account where your client base is located, what kind of running costs are associated with running the infrastructure and how many people we can expect using it. I'll create two sets of servers for you: production and development. The production are the servers that are live and your clients are using and the development (sometimes called staging) server is where we will compile all the features for the next release so they can be thoroughly tested. Additionally I recommend setting up a third set for testing individual features in isolation.