Fakecloud: Local AWS cloud emulator for integration tests

Built for realistic local testing Real APIs for your app, purpose-built tooling for your tests. Test what your app really does Use normal AWS clients against localhost, then verify the effects with fakecloud instead of stitching together polling, fixtures, or private test hooks. First-party test clients TypeScript, Python, Go, PHP, Java, and Rust SDKs wrap the /_fakecloud/* endpoints for resets, assertions, and manual control of async processors after your app has already used the normal AWS APIs. 105 AWS services S3, SQS, SNS, EventBridge, EventBridge Pipes, EventBridge Scheduler, Lambda, EC2, DynamoDB, IAM, STS, Organizations, SSM, Secrets Manager, CloudWatch Logs, CloudWatch (Metrics & Alarms), KMS, CloudFormation, Cloud Control API, SES, Cognito User Pools, Cognito Identity, Kinesis, Firehose, RDS, RDS Data API, Aurora DSQL, Resource Groups, Resource Groups Tagging API, ElastiCache, MemoryDB, EKS, Cloud Map, Step Functions, API Gateway v1 (REST), API Gateway v2 (HTTP), Bedrock, Bedrock Agent, Bedrock Agent Runtime, Bedrock Runtime, ECR, ECS, Elastic Load Balancing v2, CloudFront, Route 53, WAF v2, Application Auto Scaling, Athena, ACM, and Glue. Conformance tested True 100% conformance across all 3,932 implemented API operations: 248,557/248,557 Smithy-model-generated test variants pass on every commit, backed by end-to-end tests against the official AWS SDKs. Cross-service flows are wired up 30+ service-to-service integrations: S3 notifications, SNS fanout, EventBridge targets, DynamoDB Streams, CloudWatch Logs subscriptions, Cognito triggers, Step Functions task integrations, API Gateway → Lambda, and more — all exercise real service interactions. No auth, no lock-in, no paid tier Run a single binary or Docker image, use any dummy credentials, and keep the whole workflow local without signing in to someone else's platform.