I’m a fan of using tools that fit your problem. I think Fulcro is probably better if you have a frontend that uses Fulcro/React. It can bring order to the sometimes Wild West of data fetching that happens in the browser world. That said - if your problem isn’t a full stack web app, don’t use Fulcro. Like you said, there is already very good tech for doing REST APIs or static html pages or the like. I don’t think Clojure has any frameworks like Ruby on Rails where you use it for all use cases. For example - I’d probably switch to httpkit over ring if I needed to solve a problem with async websockets.