App Runner is a fully managed service that builds and runs containerized web applications and APIs straight from your source code or a container image — no infrastructure, load balancers, or scaling to configure.
Where it fits
App Runner is the simplest way to get a containerized web app online: point it at your repo or image and it handles build, deploy, load balancing, and auto scaling. It sits between the full control of ECS/EKS and the function model of Lambda. The tell is “deploy a containerized web app with the least operational effort.”
Test yourself
A team wants to deploy a containerized web API with automatic scaling and load balancing but zero infrastructure setup. Which service is simplest?
- Amazon EKS
- AWS App Runner
- Amazon EC2 with a load balancer
- AWS Batch
👉 Click to reveal the answer & explanation
Correct answer: B. App Runner runs containerized web apps from source or image with built-in scaling and load balancing and no infrastructure to manage. EKS (A) and EC2+ELB (C) require significant setup; Batch (D) is for batch jobs, not web apps.
Related topics
ECS vs EKS vs Fargate · AWS Elastic Beanstalk · AWS Lambda
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