API Gateway & Reverse Proxy

scenario - multiple Domain host and control in one API Gateway.

such as

• login.google.com

• account.google.com

• login.google.com -> add custom header

• account.google.com -> add custom header

but what if use CloudFlare?

• https://developers.cloudflare.com/rules/transform/request-header-modification/create-dashboard#:~:text=Log%20in%20to%20the%20Cloudflare,Modification%20Rule%20in%20Rule%20name.

what if use AWS API gateway?

• https://slmkitani.medium.com/passing-custom-headers-through-amazon-api-gateway-to-an-aws-lambda-function-f3a1cfdc0e29