# API Gateway

API Gateway is a self-hosted tools & utilities app. OpenWhisk API Gateway is a front door for Apache OpenWhisk services, routing, securing, and managing incoming web traffic to backend services. It is open source and self-hosted, installable on Docker Hub.

Canonical page: https://ourlocalhost.com/app/6206/api-gateway

## Description

OpenWhisk API Gateway is a front door for Apache OpenWhisk services, routing, securing, and managing incoming web traffic to backend services.

## Platform availability

Available on 1 of 6 install platforms: Helm.

## Links

- Docker Hub: https://hub.docker.com/r/openwhisk/apigateway
- Official website: https://openwhisk.apache.org

## Common questions

### How should an API gateway route be set up so a working backend does not appear broken with 404 errors?

Point the gateway route to the exact path your backend app serves. If the path is not exposed, callers get 404 Not Found even though the backend may be running.

### What configuration is required when a browser calls the API from a different domain?

Configure CORS and an OPTIONS preflight method in the API definition. Without it, the browser can block the request and show a confusing error even when the API itself works.

### Can a self-hosted gateway manage APIs across hybrid or multicloud environments?

The self-hosted gateway feature of Azure API Management can help manage APIs in hybrid and multicloud environments.

### Where can users and experts discuss Infor API Gateway questions?

The Infor Global Community has an API Gateway forum for users and experts to discuss questions and share knowledge.

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Source: Our Local Host (https://ourlocalhost.com/app/6206/api-gateway), the self-hosted and open-source app directory.