Cirrus
MVPHave you seen F5 APM Api protection profile that ca asign differen servers based on the URL/URI or NGINX as nginx+ is an API gateway that can even translate between API protocols? Also the F5 distributed Cloud handles and control the flow of application and API traffic between services, to the internet, and from clients on the internet.
Edit:
For Kubernetes the F5 distributed cloud and the NGINX can be your Ingress Controllers but F5 XC is better if you want something simple that is cotrolled by a cloud managed console as it is basically SDN system while with NGINX you will have more control but also more responsibility. Also if you need protocol translations like HTTP to RPC you will need to check with F5 if the F5 XC can do the same things NGINX API Gateway can as this is something NGINX is best at. For on-prem virtual ESXI or hardware appliance F5 BIG-IP is the king.
F5 BIG-IP:
https://support.f5.com/csp/article/K44584132
https://clouddocs.f5.com/training/community/access-solutions/solution13/guide/guide.html
NGINX:
https://www.nginx.com/blog/deploying-nginx-plus-as-an-api-gateway-part-1/
https://www.nginx.com/blog/deploying-nginx-plus-as-an-api-gateway-part-3-publishing-grpc-services/
F5 XC/Distributed Cloud:
https://docs.cloud.f5.com/docs/ves-concepts/load-balancing-and-proxy
https://www.f5.com/cloud/products/load-balancer-and-k8s-gateway