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AWS Architecture

Amazon ECS Gateway: Managed Ingress for ECS, and When to Use It Instead of Your Own ALBs

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October 25, 2026

6 min read

Launched October 20, 2026, ECS Gateway lets a platform team define ingress once and lets services attach to it: up to 25 services share an ALB, each gets its own hostname and ACM certificate, and the gateway adds or removes load balancers as needed. No extra charge beyond the ALBs. What it does, what it does not, and how it fits with Service Connect.

Amazon ECS
ECS Gateway
Application Load Balancer
Ingress
Platform Engineering

Every ECS team eventually builds the same thing: a shared Application Load Balancer, listener rules per service, certificates, DNS records and the automation that keeps them in sync. ECS Gateway, announced on October 20, 2026, makes that an account-level resource that ECS manages for you.

How it works

  • A platform team creates a gateway with its subnets, security groups, certificate settings and listener configuration.

  • Application teams add a gateway connector to their service definition. ECS provisions host-based routing on an ALB, a unique DNS hostname and an ACM certificate for the service.

  • Up to 25 services share one ALB. When that fills, the gateway creates another, up to a configurable limit (10 by default), and removes load balancers it no longer needs.

  • Each service keeps its own security group, and a WAF web ACL can be attached.

  • A gateway can serve up to 10,000 clusters, and a cluster can use up to five gateways.

  • There is no charge for the gateway itself; you pay for the ALBs, certificates, logs and data transfer it creates.

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Limits worth knowing

  • Services must use awsvpc networking, and their Availability Zones must be a subset of the gateway's.

  • Routing is host-based. If you route several services under one hostname by path, keep your own ALB rules for those.

  • The launch does not include canary routing or rate limiting at the gateway. ECS deployments handle canary and linear rollouts; WAF handles rate limits.

  • A deployment fails if the gateway has reached its ALB limit and no capacity is left, so set the limit with headroom.

Where it fits

Traffic

Use

Internet or internal clients to services, one hostname per service

ECS Gateway

Complex path routing, or a load balancer shared with non-ECS targets

Your own ALB and listener rules

Service to service inside ECS

Service Connect, now with zone-aware routing

Service to service across accounts or VPCs, with IAM authorization

VPC Lattice

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As of October 25, 2026. Provided as is, for general information, and accurate to the best of our knowledge on the date shown. Not legal, compliance, tax, financial or other professional advice. Prices, limits and vendor services change; check current vendor documentation before relying on anything here. Terms of use.