Top 10 API Gateway Solutions for Microservices Architects

Curated by Chief Revenue Officer Kory White · CRO Syndicate · 📄 1-Page Resume

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📅 Published Jun 23, 2026 · 8 min read

Direct Answer

Kong Gateway (Enterprise) is the #1 API gateway for microservices architects who need a battle-tested, plugin-extensible, multi-protocol proxy with native Kubernetes integration and a mature DevPortal. Apache APISIX is the runner-up, ideal for teams that want a lighter, open-core alternative with sub‑millisecond latency and a rich plugin ecosystem.

Both outperform generic reverse proxies (Nginx, Envoy) in rate‑limiting, authentication, and observability out of the box.

How We Ranked These

We evaluated each solution against five criteria critical for microservices architectures in production:

Performance & Scalability – raw throughput, latency overhead, horizontal scaling with Kubernetes/HashiCorp Nomad.
Plugin Ecosystem & Extensibility – breadth of built‑in plugins (auth, rate‑limiting, circuit‑breaking, transformation) and custom plugin SDKs (Lua, Go, Java, Wasm).
Kubernetes Native Integration – support for Ingress Controller, Gateway API, service mesh sidecar mode, and CRDs.
Observability & Operations – built‑in metrics (Prometheus, OpenTelemetry), logging (Elastic, Splunk), tracing (Jaeger, Zipkin), and health checks.
Pricing & Licensing Model – open‑source vs. Enterprise cost, per‑request or per‑node pricing, and hidden fees (e.g., support tiers, add‑on modules).

Each gateway was assigned a composite score (1–10) across these axes. The ranking reflects real‑world feedback from Gartner Peer Insights, Forrester Wave, and community benchmarks as of early 2027.

1. Kong Gateway (Enterprise) 🏆 BEST OVERALL

Kong Gateway is the most widely deployed API gateway for microservices, running on OpenResty (Nginx + Lua) with a plugin architecture that supports over 200 pre‑built plugins. Its Kong Ingress Controller provides first‑class Kubernetes integration, supporting both the Gateway API (v1beta1) and traditional Ingress resources.

Kong’s DevPortal enables self‑service API discovery for internal and partner teams.

Use Kong when you need enterprise‑grade security (OAuth2, OIDC, JWT, mTLS) and traffic management (canary releases, blue‑green deployments, circuit‑breaking). The Kong Manager UI gives ops teams a single pane for monitoring rate limits, request logs, and latency histograms.

Kong also integrates with Prometheus for custom dashboards and Grafana for alerting.

Pricing starts at $15,000/year for the Enterprise tier (up to 5 nodes), with free community edition (Kong OSS) available for smaller deployments. The Kong Konnect SaaS version adds global control plane management and analytics. For teams already using HashiCorp Vault or AWS Secrets Manager, Kong’s secret‑management plugin handles credential rotation natively.

2. Apache APISIX 💎 BEST VALUE

Apache APISIX is an open‑source, cloud‑native API gateway built on Nginx and etcd for dynamic configuration. It achieves sub‑millisecond P99 latency under 10k RPS, making it one of the fastest gateways in the market. APISIX supports 50+ plugins out of the box, including rate‑limiting, IP whitelisting, gRPC‑web proxy, and Server‑Sent Events (SSE).

It’s the best value for teams that want zero‑vendor lock‑in and high performance without a commercial license. The APISIX Ingress Controller fully implements the Kubernetes Gateway API, and its Wasm plugin runtime lets you write custom plugins in Go, Rust, or AssemblyScript.

The APISIX Dashboard provides a web UI for route management and analytics.

APISIX is 100% free under the Apache 2.0 license. The API7.ai enterprise edition adds 24/7 support, multi‑cluster management, and advanced analytics starting at $12,000/year. For startups and mid‑size teams, APISIX offers enterprise features at a fraction of Kong’s cost.

3. Envoy Proxy (with Envoy Gateway)

Envoy Proxy is a high‑performance L7 proxy and service mesh data plane, now with a dedicated Envoy Gateway project that acts as a standalone API gateway. Envoy is written in C++ and delivers ultra‑low latency (sub‑500μs P99) with hot reload of configuration via xDS APIs.

It’s the default data plane for Istio, Consul Connect, and AWS App Mesh.

Use Envoy when you need deep L7 routing (header‑based, path‑based, weight‑based) and advanced observability (OpenTelemetry, access logs with custom format, distributed tracing). The Envoy Gateway provides a Kubernetes CRD for Gateway API, making it a drop‑in replacement for traditional ingress controllers.

Envoy’s rate‑limiting and circuit‑breaking are configurable via EnvoyFilter or RateLimitService.

Envoy is free and open source (Apache 2.0). The Tetrate enterprise distribution adds FIPS 140‑2 compliance, support SLAs, and multi‑cluster management starting at $20,000/year. For teams already using Istio, Envoy is the natural choice.

4. Gloo Gateway (Solo.io)

Gloo Gateway is a Kubernetes‑native API gateway built on Envoy with a focus on serverless and WebAssembly extensibility. It supports function‑level routing (to AWS Lambda, Azure Functions, Google Cloud Functions) and gRPC‑web translation. Gloo’s GraphQL gateway mode lets you aggregate multiple microservices into a single GraphQL endpoint.

Choose Gloo when you need serverless integration or GraphQL federation across microservices. The Gloo Mesh add‑on provides service mesh management for Istio, Linkerd, and Consul Connect. Gloo’s AI Gateway (announced 2026) adds LLM routing and token‑based rate‑limiting for AI‑powered microservices.

Pricing starts at $25,000/year for the Gloo Gateway Enterprise tier (up to 5 clusters). The open‑source Gloo Edge is free but lacks the AI Gateway and GraphQL federation features.

5. Tyk Gateway

Tyk Gateway is a cloud‑native API gateway written in Go with a built‑in developer portal and API analytics dashboard. It supports OAuth2, OIDC, JWT, and HMAC authentication, plus rate‑limiting with sliding window and token bucket algorithms.

Tyk’s Universal Data Graph lets you compose multiple APIs into a single GraphQL endpoint.

Use Tyk when you need multi‑tenant API management with per‑API rate limits, quota enforcement, and detailed analytics (request counts, latency percentiles, error rates). The Tyk Dashboard provides a drag‑and‑drop API designer for non‑developers. Tyk integrates with Prometheus, Datadog, and New Relic for observability.

Pricing: Tyk Community Edition is free (limited to 1 node). Tyk Enterprise starts at $18,000/year for up to 5 nodes, with multi‑data‑center replication and SLA support.

6. AWS API Gateway

AWS API Gateway is a fully managed service that handles REST, HTTP, and WebSocket APIs at AWS scale. It supports AWS Lambda integration, VPC links for private microservices, and API caching (up to 237GB). The REST API mode offers request validation, throttling, and usage plans for monetization.

Use AWS API Gateway when your microservices are already on AWS and you need zero‑ops scaling. The HTTP API mode is cheaper ($1.00 per million requests vs. $3.50 for REST) and lower latency. AWS API Gateway integrates with AWS WAF for web application firewall, CloudFront for CDN, and X‑Ray for tracing.

Pricing: $3.50 per million requests (REST) or $1.00 per million (HTTP), plus data transfer out ($0.09/GB). No upfront cost, but vendor lock‑in is a concern for multi‑cloud architectures.

7. Azure API Management

Azure API Management is a hybrid API gateway that runs in Azure, on‑premises (self‑hosted gateway), or any cloud via Azure Arc. It supports OAuth2, OpenID Connect, and Azure AD authentication, plus rate‑limiting with IP‑based and key‑based policies.

The Developer Portal is customizable with Swagger/OpenAPI import.

Choose Azure API Management when you are all‑in on Azure and need enterprise‑grade API governance. The Consumption tier (pay‑per‑execution) is cost‑effective for low‑traffic APIs, while the Premium tier offers multi‑region deployment and VNet integration for private microservices.

Pricing: Consumption tier at $0.20 per 1M calls; Developer tier at $50/month; Premium tier starts at $1,000/month (includes 2 units). The self‑hosted gateway is included in Premium.

8. NGINX Plus (with NGINX Ingress Controller)

NGINX Plus is the commercial version of the popular NGINX web server, extended with API gateway capabilities: rate‑limiting, JWT validation, gRPC proxy, and health checks. The NGINX Ingress Controller for Kubernetes supports canary deployments, session persistence, and TCP/UDP load balancing.

Use NGINX Plus when you already have NGINX expertise and need high‑performance routing for monolithic‑to‑microservices migrations. NGINX Plus integrates with Prometheus, Datadog, and Splunk via the NGINX‑plus‑exporter. The NGINX App Protect module adds WAF and DDoS protection.

Pricing: $2,500/year per instance (NGINX Plus). The open‑source NGINX is free but lacks active health checks and session persistence.

9. Traefik Proxy (Enterprise)

Traefik Proxy is a Go‑based reverse proxy and load balancer designed for Kubernetes and Docker environments. It auto‑discovers services from Kubernetes CRDs, Docker labels, Consul, and etcd, with automatic HTTPS via Let’s Encrypt. The Traefik Enterprise edition adds rate‑limiting, OAuth2, and multi‑cluster management.

Choose Traefik when you need zero‑config service discovery in dynamic environments (e.g., Kubernetes with frequent pod scaling). Traefik’s middleware system supports circuit‑breaking, retry, and header transformation. The Traefik Hub (2026) adds API management and developer portal features.

Pricing: Traefik Proxy is free (MIT license). Traefik Enterprise starts at $10,000/year for up to 5 nodes, with support and advanced plugins.

10. Gravitee.io API Management

Gravitee.io is an open‑source API management platform with a reactive gateway built on Vert.x and Netty. It supports OAuth2, JWT, API key, and LDAP authentication, plus rate‑limiting with Quota and Spike Arrest policies. The Gravitee Cockpit provides multi‑environment management and APIM‑APIM federation.

Use Gravitee when you need full API lifecycle management (design, publish, version, retire) with community‑driven extensibility. The Gravitee Gateway can run as a Kubernetes sidecar or standalone proxy. It integrates with Elasticsearch, Prometheus, and Grafana for observability.

Pricing: Community Edition is free (Apache 2.0). Enterprise Edition starts at $15,000/year for up to 5 nodes, with support, audit logs, and advanced analytics.

flowchart TD A[Which API Gateway fits your microservices?] --> B{Primary deployment?} B -->|Kubernetes only| C[Kubernetes-native?] B -->|Hybrid/Multi-cloud| D[Managed service?] C -->|Yes| E[Need serverless/GraphQL?] C -->|No| F[Need high throughput?] E -->|Yes| G[Gloo Gateway] E -->|No| H[Kong or APISIX] F -->|Yes| I[Envoy Gateway] F -->|No| J[Traefik or NGINX Plus] D -->|AWS| K[AWS API Gateway] D -->|Azure| L[Azure API Management] D -->|Self-managed| M[Kong or Tyk]

FAQ

What is the difference between an API gateway and an ingress controller? An API gateway handles cross‑cutting concerns (auth, rate‑limiting, transformation) for microservices, while an ingress controller is a Kubernetes resource for HTTP routing. Many gateways (Kong, APISIX, Envoy) also serve as ingress controllers.

Can I use an API gateway with a service mesh like Istio? Yes. Envoy is the default data plane for Istio, and Kong can run as a sidecar or ingress gateway alongside Istio. For best results, use the gateway as the ingress point and the mesh for east‑west traffic.

Which API gateway is best for high‑throughput (100k+ RPS)? Envoy and APISIX both handle 100k+ RPS with sub‑millisecond latency. NGINX Plus also excels at high throughput but lacks advanced routing features.

How much does a commercial API gateway cost per year? Enterprise gateways range from $10,000/year (Traefik Enterprise) to $25,000/year (Gloo Enterprise). Managed services (AWS, Azure) are pay‑per‑request, often cheaper for low traffic but expensive at scale.

Do I need an API gateway for a small microservices deployment? For fewer than 5 services, a simple reverse proxy (NGINX, Caddy) may suffice. As you add auth, rate‑limiting, and monitoring, a dedicated gateway becomes necessary.

Sources

Bottom Line

Choose Kong Gateway for enterprise‑grade security and plugin richness, Apache APISIX for best value and performance, Envoy for mesh‑native architectures, and AWS/Azure gateways for cloud‑native teams that want zero ops. Evaluate your Kubernetes maturity, traffic patterns, and budget before committing.

*Top 10 API Gateway Solutions for Microservices Architects ranking Kong APISIX Envoy Gloo Tyk AWS Azure NGINX Traefik Gravitee*

Keep reading

### Direct Answer
**Kong Gateway (Enterprise)** is the #1 API gateway for microservices architects who need a battle-tested, plugin-extensible, multi-protocol proxy with native Kubernetes integration and a mature DevPortal. **Apache APISIX** is the runner-up, ideal for teams that want a lighter, open-core alternative with sub‑millisecond latency and a rich plugin ecosystem. Both outperform generic reverse proxies (Nginx, Envoy) in rate‑limiting, authentication, and observability out of the box.

## How We Ranked These
We evaluated each solution against five criteria critical for microservices architectures in production:

1. **Performance & Scalability** – raw throughput, latency overhead, horizontal scaling with Kubernetes/HashiCorp Nomad.
2. **Plugin Ecosystem & Extensibility** – breadth of built‑in plugins (auth, rate‑limiting, circuit‑breaking, transformation) and custom plugin SDKs (Lua, Go, Java, Wasm).
3. **Kubernetes Native Integration** – support for Ingress Controller, Gateway API, service mesh sidecar mode, and CRDs.
4. **Observability & Operations** – built‑in metrics (Prometheus, OpenTelemetry), logging (Elastic, Splunk), tracing (Jaeger, Zipkin), and health checks.
5. **Pricing & Licensing Model** – open‑source vs. Enterprise cost, per‑request or per‑node pricing, and hidden fees (e.g., support tiers, add‑on modules).

Each gateway was assigned a composite score (1–10) across these axes. The ranking reflects real‑world feedback from Gartner Peer Insights, Forrester Wave, and community benchmarks as of early 2027.

## 1. Kong Gateway (Enterprise) 🏆 BEST OVERALL
**Kong Gateway** is the most widely deployed API gateway for microservices, running on **OpenResty** (Nginx + Lua) with a **plugin architecture** that supports over 200 pre‑built plugins. Its **Kong Ingress Controller** provides first‑class Kubernetes integration, supporting both the **Gateway API** (v1beta1) and traditional Ingress resources. Kong’s **DevPortal** enables self‑service API discovery for internal and partner teams.

Use Kong when you need **enterprise‑grade security** (OAuth2, OIDC, JWT, mTLS) and **traffic management** (canary releases, blue‑green deployments, circuit‑breaking). The **Kong Manager** UI gives ops teams a single pane for monitoring rate limits, request logs, and latency histograms. Kong also integrates with **Prometheus** for custom dashboards and **Grafana** for alerting.

Pricing starts at **$15,000/year** for the Enterprise tier (up to 5 nodes), with **free community edition** (Kong OSS) available for smaller deployments. The **Kong Konnect** SaaS version adds global control plane management and analytics. For teams already using **HashiCorp Vault** or **AWS Secrets Manager**, Kong’s secret‑management plugin handles credential rotation natively.

## 2. Apache APISIX 💎 BEST VALUE
**Apache APISIX** is an open‑source, cloud‑native API gateway built on **Nginx** and **etcd** for dynamic configuration. It achieves **sub‑millisecond P99 latency** under 10k RPS, making it one of the fastest gateways in the market. APISIX supports **50+ plugins** out of the box, including **rate‑limiting**, **IP whitelisting**, **gRPC‑web proxy**, and **Server‑Sent Events (SSE)**.

It’s the best value for teams that want **zero‑vendor lock‑in** and **high performance** without a commercial license. The **APISIX Ingress Controller** fully implements the **Kubernetes Gateway API**, and its **Wasm plugin runtime** lets you write custom plugins in **Go**, **Rust**, or **AssemblyScript**. The **APISIX Dashboard** provides a web UI for route management and analytics.

APISIX is **100% free** under the Apache 2.0 license. The **API7.ai** enterprise edition adds **24/7 support**, **multi‑cluster management**, and **advanced analytics** starting at **$12,000/year**. For startups and mid‑size teams, APISIX offers enterprise features at a fraction of Kong’s cost.

## 3. Envoy Proxy (with Envoy Gateway)
**Envoy Proxy** is a high‑performance L7 proxy and service mesh data plane, now with a dedicated **Envoy Gateway** project that acts as a standalone API gateway. Envoy is written in **C++** and delivers **ultra‑low latency** (sub‑500μs P99) with **hot reload** of configuration via xDS APIs. It’s the default data plane for **Istio**, **Consul Connect**, and **AWS App Mesh**.

Use Envoy when you need **deep L7 routing** (header‑based, path‑based, weight‑based) and **advanced observability** (OpenTelemetry, access logs with custom format, distributed tracing). The **Envoy Gateway** provides a **Kubernetes CRD** for Gateway API, making it a drop‑in replacement for traditional ingress controllers. Envoy’s **rate‑limiting** and **circuit‑breaking** are configurable via **EnvoyFilter** or **RateLimitService**.

Envoy is **free and open source** (Apache 2.0). The **Tetrate** enterprise distribution adds **FIPS 140‑2 compliance**, **support SLAs**, and **multi‑cluster management** starting at **$20,000/year**. For teams already using **Istio**, Envoy is the natural choice.

## 4. Gloo Gateway (Solo.io)
**Gloo Gateway** is a **Kubernetes‑native** API gateway built on **Envoy** with a focus on **serverless** and **WebAssembly** extensibility. It supports **function‑level routing** (to AWS Lambda, Azure Functions, Google Cloud Functions) and **gRPC‑web** translation. Gloo’s **GraphQL** gateway mode lets you aggregate multiple microservices into a single GraphQL endpoint.

Choose Gloo when you need **serverless integration** or **GraphQL federation** across microservices. The **Gloo Mesh** add‑on provides **service mesh management** for **Istio**, **Linkerd**, and **Consul Connect**. Gloo’s **AI Gateway** (announced 2026) adds **LLM routing** and **token‑based rate‑limiting** for AI‑powered microservices.

Pricing starts at **$25,000/year** for the **Gloo Gateway Enterprise** tier (up to 5 clusters). The **open‑source Gloo Edge** is free but lacks the **AI Gateway** and **GraphQL federation** features.

## 5. Tyk Gateway
**Tyk Gateway** is a **cloud‑native** API gateway written in **Go** with a **built‑in developer portal** and **API analytics** dashboard. It supports **OAuth2**, **OIDC**, **JWT**, and **HMAC** authentication, plus **rate‑limiting** with **sliding window** and **token bucket** algorithms. Tyk’s **Universal Data Graph** lets you compose multiple APIs into a single GraphQL endpoint.

Use Tyk when you need **multi‑tenant API management** with **per‑API rate limits**, **quota enforcement**, and **detailed analytics** (request counts, latency percentiles, error rates). The **Tyk Dashboard** provides a **drag‑and‑drop** API designer for non‑developers. Tyk integrates with **Prometheus**, **Datadog**, and **New Relic** for observability.

Pricing: **Tyk Community Edition** is free (limited to 1 node). **Tyk Enterprise** starts at **$18,000/year** for up to 5 nodes, with **multi‑data‑center replication** and **SLA support**.

## 6. AWS API Gateway
**AWS API Gateway** is a **fully managed** service that handles **REST**, **HTTP**, and **WebSocket** APIs at **AWS scale**. It supports **AWS Lambda** integration, **VPC links** for private microservices, and **API caching** (up to 237GB). The **REST API** mode offers **request validation**, **throttling**, and **usage plans** for monetization.

Use AWS API Gateway when your microservices are **already on AWS** and you need **zero‑ops** scaling. The **HTTP API** mode is cheaper ($1.00 per million requests vs. $3.50 for REST) and lower latency. AWS API Gateway integrates with **AWS WAF** for web application firewall, **CloudFront** for CDN, and **X‑Ray** for tracing.

Pricing: **$3.50 per million requests** (REST) or **$1.00 per million** (HTTP), plus **data transfer out** ($0.09/GB). No upfront cost, but **vendor lock‑in** is a concern for multi‑cloud architectures.

## 7. Azure API Management
**Azure API Management** is a **hybrid** API gateway that runs in **Azure**, **on‑premises** (self‑hosted gateway), or **any cloud** via **Azure Arc**. It supports **OAuth2**, **OpenID Connect**, and **Azure AD** authentication, plus **rate‑limiting** with **IP‑based** and **key‑based** policies. The **Developer Portal** is customizable with **Swagger/OpenAPI** import.

Choose Azure API Management when you are **all‑in on Azure** and need **enterprise‑grade** API governance. The **Consumption** tier (pay‑per‑execution) is cost‑effective for low‑traffic APIs, while the **Premium** tier offers **multi‑region deployment** and **VNet integration** for private microservices.

Pricing: **Consumption** tier at **$0.20 per 1M calls**; **Developer** tier at **$50/month**; **Premium** tier starts at **$1,000/month** (includes 2 units). The **self‑hosted gateway** is included in Premium.

## 8. NGINX Plus (with NGINX Ingress Controller)
**NGINX Plus** is the **commercial** version of the popular **NGINX** web server, extended with **API gateway** capabilities: **rate‑limiting**, **JWT validation**, **gRPC proxy**, and **health checks**. The **NGINX Ingress Controller** for Kubernetes supports **canary deployments**, **session persistence**, and **TCP/UDP** load balancing.

Use NGINX Plus when you already have **NGINX expertise** and need **high‑performance** routing for **monolithic‑to‑microservices** migrations. NGINX Plus integrates with **Prometheus**, **Datadog**, and **Splunk** via the **NGINX‑plus‑exporter**. The **NGINX App Protect** module adds **WAF** and **DDoS** protection.

Pricing: **$2,500/year per instance** (NGINX Plus). The **open‑source NGINX** is free but lacks **active health checks** and **session persistence**.

## 9. Traefik Proxy (Enterprise)
**Traefik Proxy** is a **Go‑based** reverse proxy and load balancer designed for **Kubernetes** and **Docker** environments. It **auto‑discovers** services from **Kubernetes CRDs**, **Docker labels**, **Consul**, and **etcd**, with **automatic HTTPS** via **Let’s Encrypt**. The **Traefik Enterprise** edition adds **rate‑limiting**, **OAuth2**, and **multi‑cluster** management.

Choose Traefik when you need **zero‑config** service discovery in **dynamic** environments (e.g., **Kubernetes** with frequent pod scaling). Traefik’s **middleware** system supports **circuit‑breaking**, **retry**, and **header transformation**. The **Traefik Hub** (2026) adds **API management** and **developer portal** features.

Pricing: **Traefik Proxy** is **free** (MIT license). **Traefik Enterprise** starts at **$10,000/year** for up to 5 nodes, with **support** and **advanced plugins**.

## 10. Gravitee.io API Management
**Gravitee.io** is an **open‑source** API management platform with a **reactive** gateway built on **Vert.x** and **Netty**. It supports **OAuth2**, **JWT**, **API key**, and **LDAP** authentication, plus **rate‑limiting** with **Quota** and **Spike Arrest** policies. The **Gravitee Cockpit** provides **multi‑environment** management and **APIM‑APIM** federation.

Use Gravitee when you need **full API lifecycle management** (design, publish, version, retire) with **community‑driven** extensibility. The **Gravitee Gateway** can run as a **Kubernetes sidecar** or **standalone** proxy. It integrates with **Elasticsearch**, **Prometheus**, and **Grafana** for observability.

Pricing: **Community Edition** is **free** (Apache 2.0). **Enterprise Edition** starts at **$15,000/year** for up to 5 nodes, with **support**, **audit logs**, and **advanced analytics**.

```mermaid
flowchart TD
    A[Which API Gateway fits your microservices?] --> B{Primary deployment?}
    B -->|Kubernetes only| C[Kubernetes-native?]
    B -->|Hybrid/Multi-cloud| D[Managed service?]
    C -->|Yes| E[Need serverless/GraphQL?]
    C -->|No| F[Need high throughput?]
    E -->|Yes| G[Gloo Gateway]
    E -->|No| H[Kong or APISIX]
    F -->|Yes| I[Envoy Gateway]
    F -->|No| J[Traefik or NGINX Plus]
    D -->|AWS| K[AWS API Gateway]
    D -->|Azure| L[Azure API Management]
    D -->|Self-managed| M[Kong or Tyk]
```

## FAQ
**What is the difference between an API gateway and an ingress controller?**  
An **API gateway** handles cross‑cutting concerns (auth, rate‑limiting, transformation) for microservices, while an **ingress controller** is a Kubernetes resource for HTTP routing. Many gateways (Kong, APISIX, Envoy) also serve as ingress controllers.

**Can I use an API gateway with a service mesh like Istio?**  
Yes. **Envoy** is the default data plane for **Istio**, and **Kong** can run as a sidecar or ingress gateway alongside Istio. For best results, use the gateway as the **ingress** point and the mesh for **east‑west** traffic.

**Which API gateway is best for high‑throughput (100k+ RPS)?**  
**Envoy** and **APISIX** both handle 100k+ RPS with sub‑millisecond latency. **NGINX Plus** also excels at high throughput but lacks advanced routing features.

**How much does a commercial API gateway cost per year?**  
Enterprise gateways range from **$10,000/year** (Traefik Enterprise) to **$25,000/year** (Gloo Enterprise). Managed services (AWS, Azure) are pay‑per‑request, often cheaper for low traffic but expensive at scale.

**Do I need an API gateway for a small microservices deployment?**  
For fewer than 5 services, a simple reverse proxy (NGINX, Caddy) may suffice. As you add auth, rate‑limiting, and monitoring, a dedicated gateway becomes necessary.

## Sources
- [Kong Gateway Documentation](https://docs.konghq.com/gateway/)
- [Apache APISIX Benchmarks](https://apisix.apache.org/docs/benchmark/)
- [Envoy Proxy Architecture](https://www.envoyproxy.io/docs/envoy/latest/intro/arch_overview)
- [Gloo Gateway Features](https://www.solo.io/products/gloo-gateway/)
- [Tyk Gateway Pricing](https://tyk.io/pricing/)
- [AWS API Gateway Pricing](https://aws.amazon.com/api-gateway/pricing/)
- [Azure API Management Tiers](https://azure.microsoft.com/en-us/pricing/details/api-management/)
- [NGINX Plus vs Open Source](https://www.nginx.com/products/nginx/)
- [Traefik Enterprise Overview](https://traefik.io/traefik-enterprise/)
- [Gravitee.io API Management](https://www.gravitee.io/)

## Bottom Line
Choose **Kong Gateway** for enterprise‑grade security and plugin richness, **Apache APISIX** for best value and performance, **Envoy** for mesh‑native architectures, and **AWS/Azure gateways** for cloud‑native teams that want zero ops. Evaluate your **Kubernetes maturity**, **traffic patterns**, and **budget** before committing.

*Top 10 API Gateway Solutions for Microservices Architects ranking Kong APISIX Envoy Gloo Tyk AWS Azure NGINX Traefik Gravitee*

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