Sooner or later, we need to know the status of our application, external services it uses and all other parts important for our application to work properly. For example, an application may have a health check for its database connection to ensure that the connection is still alive and working properly. If the database connection fails, the health check system can be configured to report the problem to interested parties. ASP.NET provides a built-in health check system that can be used to monitor these parts. Health checks are exposed by an application as HTTP endpoints, where the basic use case is to check the ability to a process request.