**EnvoyProxy/Envoy:** - **Type:** Service mesh and API gateway. - **Language:** Written in C++. - **Features:** - Advanced load balancing. - Observability with metrics, tracing, and logging. - Security features like mTLS, JWT validation, and rate limiting. - Supports multiple protocols (HTTP/1.1, HTTP/2, gRPC, etc.). - Active community and backed by Lyft and CNCF. - **Use Cases:** Service mesh, API gateway, ingress controller. **Krakend/Krakend-CE:** - **Type:** API Gateway. - **Language:** Written in Go. - **Features:** - High performance with low latency. - Supports multiple protocols (HTTP, gRPC, etc.). - Advanced routing and transformation capabilities. - Security features like JWT validation and rate limiting. - Pluggable architecture for custom logic. - **Use Cases:** API aggregation, transformation, and management. Both tools are designed for handling API traffic but serve different primary purposes. Envoy is more focused on service mesh and advanced traffic management, while Krakend is specialized in API aggregation and transformation.