# aws/aws-lambda-web-adapter

Run web applications on AWS Lambda

Repository: https://github.com/aws/aws-lambda-web-adapter
Canonical: https://ross.abutalabs.com/products/aws-lambda-web-adapter
Language: Rust
License: Apache-2.0
License Family: permissive
Topics: aws-lambda, lambda
Last push: 2026-08-14T22:42:34+00:00

## Health v2 (maintenance only)
Score: 90/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 97, release rhythm 74, longevity 100
- inputs: {"age_days": 1840, "days_push": 19, "days_rel": 97, "gap_med": 82.0, "n_releases_24m": 5}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2741, forks 159 (observed 2026-08-28T04:07:16.533240+00:00)

## What it is
AWS Lambda Web Adapter is a Rust-based Lambda extension that lets any web application speaking HTTP 1.1/1.0 run on AWS Lambda without code changes. It translates Lambda events (API Gateway, Function URLs, ALB) into HTTP requests forwarded to the app's local web server.

## Use cases
- run an express.js app on aws lambda
- deploy flask app to lambda without rewriting
- serve spring boot on lambda function urls
- use the same docker image on lambda and fargate
- stream responses from a web app through lambda
- migrate a monolith web api to serverless

## When to choose
- you want to run an existing HTTP web app on Lambda with zero code changes
- you need portability of one container image across Lambda, Fargate, and EC2
- you use a framework or language without a native Lambda runtime handler

## When to avoid
- you need fine-grained control over Lambda handlers and cold starts better served by native runtimes
- your workload is not HTTP/event-driven
- you want to avoid the extra latency of a local HTTP hop inside the sandbox

## Facets
- artifact type: infra-config
- maturity: active
- function: http-server, middleware, deployment, serverless
- domain: cloud-computing, backend, web-development, apis
- platform: serverless, cloud, rust
- tags: aws-lambda, lambda-extension, web-adapter, api-gateway, fargate, http-proxy, serverless-deployment, devops, docker, linux

## Member repositories
- aws/aws-lambda-web-adapter (main) score 90

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:16.533240+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T08:19:08.648026+00:00, confidence not recorded.
  - readme: https://github.com/aws/aws-lambda-web-adapter (fetched 2026-08-28T04:07:16.533240+00:00, sha 74b2861e40f8)
- Data as of 2026-08-30T08:39:29.467469+00:00.