Istio is interesting project that shows a tremendous amount of promise as a full featured micro-services mesh. It is a pretty young technology with a very wide scope and will take a little time to settle down for production use cases. We wanted to create something very simple for a very simple use case: connecting clusters to the outside world. We don’t aspire to the capabilities of Istio and as the project matures we will look to work with the community to rationalize and converge.