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HttpClientFactory can be registered and used to configure and consume HttpClients in your application. It provides several benefits:

1. Provide a central location for naming and configuring logical HttpClients. For example, you may configure a “github” client that is pre-configured to access github and a default client for other purposes.
2. Codify the concept of outgoing middleware via delegating handlers in HttpClient and implementing Polly based middleware to take advantage of that. a. HttpClient already has the concept of delegating handlers that could be linked together for outgoing HTTP requests. The factory will make registering of these per named client more intuitive as well as implement a Polly handler that allows Polly policies to be used for Retry, CircuitBreakers, etc. Other “middleware” could also be implemented in the future but we don’t yet know when that will be.
3. Manage the lifetime of HttpClientMessageHandlers to avoid common problems that can be hit when managing HttpClient lifetimes yourself.