Thanks for the information Zhijun He.
Yes, Apps are on cloud working as backend service.
Everything resides in cloud. I need to connect cloud application from On premises Layer7 API Gateway.
My network not allowing me anything to interact with cloud.At the same time my network team is not ready to allow public protocols/ports.
Is there any other possibility to interact with cloud without opening any ports in my network level.
I know this is not a fair question but still checking any possibilities.
Regards
Rajasekhar