To handle the integration events between the catalog and the basket modules, I decided to pick MassTransit. To quote their GitHub project: MassTransit is a free, open-source distributed application framework for .NET. MassTransit makes it easy to create applications and services that leverage message-based, loosely-coupled asynchronous communication for higher availability, reliability, and scalability. I picked MassTransit because it is a popular project with 5,800 GitHub stars as of 2023 and supports many providers, including in-memory. Moreover, it offers many features that are way above our needs. Once again, we could have used anything. For example, MediatR could have also done…