Implementing Azure Functions to send emails

Here, we will use a subset of the Azure components. The use case from WWTravelClub proposes a worldwide implementation of the service, and there is a chance that this service will need different architecture designs to achieve all the key performance points that we described in Chapter 1, Understanding the Importance of Software Architecture.

If you go back to the user stories that were described in this chapter, you will find that many needs are related to communication. Because of this, it is common to have some alerts provided by emails in the solution. This implementation will focus on how to send emails. The architecture will be totally serverless. The benefits of using an architecture like that are explained below.

The following diagram shows the basic structure of the architecture. To give users a great experience, all the emails that are sent by the application will be queued asynchronously, thereby preventing significant...