Top 10 API Gateway Solutions for Microservices Architects in 2027

Kong Gateway is an NGINX-based gateway that Kong bills as the most adopted open source API gateway, with 50K+ transactions per second per node. It ships security, authentication, transformation and analytics plugins, you can build your own with the Plugin Development Kit, and the Kong Ingress Controller configures it the same way as Kubernetes. Konnect API Management Plus starts at $25/month plus usage with up to 1M API requests included; Enterprise is custom and billed annually.

Apache APISIX is free and Apache 2.0 licensed, with 100+ open-source plugins for traffic management, security, observability and protocol handling. Hot updates and hot plugins change configuration without restarts, and it handles HTTP-to-gRPC transcoding, WebSocket, gRPC, Dubbo and MQTT proxy. The project claims about 18k QPS per core with 0.2 ms added latency, without publishing the test setup.

Envoy Gateway implements the Kubernetes Gateway API and extends it to expose advanced Envoy features. Its Security Policy enforces mTLS, JWT based access control and OIDC integration, with API key authorization, and traffic controls cover rate limiting, retry policies, circuit breaking, timeouts and failover. Envoy Proxy is a Cloud Native Computing Foundation graduated project originally built at Lyft.

kgateway was originally created by Solo.io and known as Gloo. It is built on Envoy Proxy and the Kubernetes Gateway API, is Apache 2.0 licensed and is a Cloud Native Computing Foundation sandbox project. Open source is free forever, with enterprise features and support available from Solo.io; its feature list covers encryption, external authentication, a web application firewall and rate limiting.

Tyk Gateway is a free open source gateway with powerful features for both REST and GraphQL, including response caching, rate limiting, throttling, circuit breakers and load balancing. Tyk Cloud offers a 48-hour trial with no credit card. Core is usage-based, Professional is a flat rate with unlimited APIs (services) and unlimited API requests per month, and Enterprise is custom; no dollar figures are published.

Amazon API Gateway creates, publishes, maintains, monitors and secures APIs at any scale and connects to AWS Lambda, Amazon EC2, Amazon Kinesis, Amazon DynamoDB and private applications. REST APIs cost $3.50 per million calls in the first tier, HTTP APIs $1.00 per million calls, and WebSocket APIs $1.00 per million messages plus $0.25 per million connection minutes. The first million REST and HTTP calls are free each month for up to 12 months.

Azure API Management is priced by tier. Basic v2 has a 99.95% SLA, 10M included requests per month and 250 MB of cache; Standard v2 has 50M included requests, 1 GB of cache and VNET integration; Premium v2 offers unlimited requests, 5 GB of cache and a 99.99% SLA across two or more zones or regions. The Developer tier has no SLA and is not suitable for production use.

NGINX Plus adds advanced traffic control, security and observability to open source NGINX. API-driven configuration updates traffic without reloads, real-time monitoring tracks 200+ metrics, and API gateway features cover routing, authentication and rate limiting alongside L4/L7 load balancing. Pricing is not published.

Traefik Proxy is free and open source, with service auto-discovery, HTTP/2/3, TCP, UDP, gRPC, WebSockets and canary deployments. Traefik Hub API Gateway adds a native WAF and access control for LDAP, JWT, API Key, HMAC, OAuth, OIDC and Open Policy Agent, plus FIPS 140-2 and 140-3 support. Upgrading from Proxy to Hub is in place and takes less than 1 minute; Hub pricing is behind a Get Pricing button.

Gravitee API Management lists a Planet plan at $2,500/month with 1 production gateway, 50M requests per month, unlimited users and 7 days / 10 GB of log retention. Galaxy adds 2 production gateways, 100M requests per month and high availability with self-hosted, hybrid or SaaS deployment; Universe has 4+ gateways, 200M+ requests and Platinum support with a Technical Account Manager.