Main limitation of these kinds of products is that the graph/workflow itself is not very expressive of dataflow options. Eventually you need map, reduce, and st

Main limitation of these kinds of products is that the graph/workflow itself is not very expressive of dataflow options. Eventually you need map, reduce, and state machines and likewise concurrency and durable execution. It's not easy to have a high level declarative tool but also expose powerful programming primitives; at some point technical need-to-knows cross the point where you might as well have the user write code.