Combining Web APIs and Event APIs brings lots of value. And API Management solutions have been providing API portals for years. We, at Solace, have chosen to support AsyncAPI for exposing/describing Event APIs, as a kind of an equivalent to openAPI specification. Our Event Portal already supports AsyncAPI 2.0.
So getting back to your question: is Event Portal going to be able to integrate with Web API Portals? This is something we are already thinking of. We are aiming to expose our runtime discovery feature to be able to integrate with any Event Broker solution (I’m sure you’ve noticed that Event Portal can discover events from Kafka already). So why not integrating with API gateways exposing RESTful endpoints. And most probably API Management solutions will support AsyncAPI as well.