[wintogreen74]

I worked with a smaller but decent-sized player in this space and the API components (while difficult) are the easier piece of the puzzle. Micro-front-ends seem really cool but you don't have to dig very deep before your spidey sense starts to tingle. We built on top of CT and others, and the front-end composition was a nightmare, so if you think backend microservices are tough to get right you haven't seen anything yet. In our experience you typically jumped through a lot of hoops to build a custom UI in someone else's walled garden against APIs that had great promise but never got you as far as "API-first" should in terms of custom, sophisticated work flows.