[meddlepal]

Istio is for building a service mesh inside your network of microservices. This is about the front facing ingress to get into your services from the internet. It's closer to Ambassador (https://getambassador.io)

[sytse]

Thanks, I tried to describe the different categories in our scope https://gitlab.com/gitlab-com/www-gitlab-com/commit/f48d5d8a...

[infinitebyte]

Ambassador is positioned as API GW instead of ingress controller. Contour is designed to be an ingress controller.