Understanding the architecture

Here is an overall diagram of the applications inside the solution:

Figure 4.3 – Applications of the EventHub solution

There are six applications and one database shown in Figure 4.3, and more information on them is provided here:

• Authentication Server: This application is used for logging in, registering, and managing the user account. It is based on ABP's standard Account module, which is based on the IdentityServer library. It is a single sign-on (SSO) server, which means that if you log in to one of the applications, you are then logged in to all of the applications (and vice versa, meaning that if you log out of one of the applications, you are logged out of all of the applications). That is an ASP.NET Core Razor Pages application, and it directly connects to The Database.
• Main Website: This is an essential website (www.openeventhub.com) of the platform used by End Users to create new events and register...