API Gateways facilitate API communications between a client and an application, and across microservices within an application. Operating at layer 7 (HTTP), an API gateway provides both internal and external communication services, along with value-added services such as authentication, rate limiting, transformations, logging and more.
Service Mesh is an emerging technology focused on routing internal communications. Operating primarily at layer 4 (TCP), a service mesh provides internal communication along with health checks, circuit breakers and other services.
Because API Gateways and Service Meshes operate at different layers in the network stack, each technology has different strengths.
At Kong, we are focused on both API Gateway and Service Mesh solutions. We believe that developers should have a unified and trusted interface to address the full range of internal and external communications, and value added services. Today, however, API Gateways and Service Mesh appear as distinct solutions requiring different architectural and implementation choices. Very soon, that will change.
references:
https://konghq.com/faqs#:~:text=The%20Kong%20Server%2C%20built%20on,before%20proxying%20the%20request%20upstream.&text=for%20proxying.,Kong%20listens%20for%20HTTP%20traffic.
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