Exposing microservices using the OCI API gateway

An API gateway is a network attached device, much like Load Balancer as a Service (LBaaS). It is fully managed by Oracle; the customer does not need to manage it. If you want to expose a private application endpoint to the public internet and implement authentication, authorization, cross-origin resource sharing (CORS), rate limiting, routing, and so on, then the API gateway is the answer. Not only do you get the benefits of running an API gateway as an ingress to the application, but you can also get fine-grained monitoring and logging entry points for your code flow via the API that's invoked by a client.

You can create one or more gateways and attach them to a regional subnet, which then processes traffic coming in from the clients and then routes those requests to the defined backend services. You can use the same gateway to serve multiple endpoints. This can be a load balancer, compute instances, or Oracle functions. The...