@localstack

LocalStack is the leading cloud development platform to enable you to develop and test your cloud & serverless applications locally.

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localstack.cloud/
Joined July 2017
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ICYMI: LocalStack now supports local testing for AWS Lambda Durable Functions! Test your entire durable workflow locally: ✅ Step retries & backoffs ✅ Callback tokens ✅ Container restarts mid-execution Full tutorial below 👇 blog.localstack.cloud/testin…
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Your app runs locally. Your database runs locally. Why is auth still hanging out in a shared AWS account? 🤨 Learn how to test Cognito locally with LocalStack, including PKCE, JWT auth, TOTP MFA, and client credentials. blog.localstack.cloud/testin…

Testing Cognito Authentication Flows Locally with LocalStack

Learn how to build and test Cognito flows against LocalStack: the hosted UI with auth code and PKCE, JWT verification against the pool's JWKS in an API Gateway authorizer, TOTP multi-factor auth, and...

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Lambda + RDS + Kubernetes + Terraform, all running locally. ☁️🚫 See how LocalStack + Kind lets you build and test a full serverless + database stack on your machine in about 5 minutes. 🎥 youtu.be/Hx0F6hRTENg
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AI agents make mistakes too. 😬 With LocalStack MCP + Cloud Pods, your agent can detect bad AWS state, roll back, fix it, and keep going. Basically: Ctrl+Z for your AI agent. blog.localstack.cloud/give-y…

Give Your AI Agent an Undo Button for AWS State

We gave Claude Code the LocalStack MCP server and a real AWS CDK app, then made a one-line change that looked harmless, which then silently destroyed the data on deployment. The agent caught it,...

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Learn how to build and test Lambda Durable Functions on LocalStack by deploying an order-processing workflow, watching checkpoints retry a flaky gateway, surviving a mid-execution restart, and resuming the workflow with a callback. Read our tutorial 👇 blog.localstack.cloud/testin…

Testing Lambda Durable Functions Locally with LocalStack

Learn how to build and test Lambda Durable Functions locally with LocalStack by deploying an order processing workflow with CDK, watching checkpointed steps retry a flaky payment gateway, surviving a...

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We acquired WonderTwin AI. LocalStack has always been about running AWS on your laptop. Now the same idea covers SaaS APIs too. Build the Slack/Stripe/whatever integration locally, test it, then ship. No live API keys, no staging box, no surprise bill. devops.com/localstack-acquir…

LocalStack Acquires WonderTwin AI to Gain SaaS App Emulation Platform - DevOps.com

LocalStack this week revealed it has acquired WonderTwin AI, a provider of an emulator of software-as-a-service (SaaS) applications.

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We asked Claude Code to run a chaos game day against a serverless data pipeline on LocalStack: define a steady state, inject faults, diagnose the failures, fix the pipeline, and prove the fix by replaying the same faults. Read more on how it worked out: blog.localstack.cloud/ask-yo…

Ask Your AI Agent to Break Your Cloud App

We asked Claude Code to run a chaos game day against a serverless data pipeline on LocalStack: define a steady state, inject faults into every hop, diagnose the failures from App Inspector traces,...

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What an incredible time we had at KCDC 2026! 🍻 Huge thank you to everyone who stopped by the LocalStack booth to chat about local cloud development, grabbed some swag, and tuned in for Kiah’s sessions on Chaos Engineering and AWS Kubernetes internals.
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Connecting with this community was easily the highlight of our event. 🫶 ☁️ 💻 On behalf of the entire LocalStack team, thank you for making KC so welcoming. We can’t wait to see you all next year!
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What happens when you intentionally break a server? Join us at KCDC 2026 to find out! 🕵️ Our very own Kiah Imani is taking the stage for two sessions you can't miss. Come find the LocalStack team at our booth and grab some swag! 🙌 🎁
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1️⃣ WTH is Chaos Engineering?! A Quick Look at Breaking Things on Purpose Controlled failure experiments, uncovering system blind spots, and learning how to test chaos locally without blowing up production. 🗓️ Thursday, September 10 ⏰ 10:00 AM – 11:00 AM 📍 Room 2201
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2️⃣ WTH Happens When You Deploy to Kubernetes on AWS? A Visual Deep Dive What actually happens under the hood when your manifest hits the EKS control plane down to pod scheduling and load balancer provisioning. 🗓️ Friday, September 11 ⏰ 2:15 PM – 3:15 PM 📍 Room 2204
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KCDC 2026 is officially here, and LocalStack is excited to be sponsoring this year’s event in Kansas City! 🍻 Beyond hanging out at the booth, our very own Kiah Imani will be taking the stage for two high-value sessions you won't want to miss. kcdc.info/sessions

Sessions — KCDC 2026

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1️⃣ WTH is Chaos Engineering?! A Quick Look at Breaking Things on Purpose 🗓️ Thurs, September 10 ⏰️ 10:00 AM – 11:00 AM 📍 Room 2201 2️⃣ WTH Happens When You Deploy to Kubernetes on AWS? A Visual Deep Dive 🗓️ Fri, September 11 ⏰️ 2:15 PM – 3:15 PM 📍 Room 2204
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When Kiah isn't on stage, come find the LocalStack team at our booth. Drop by to grab some swag, ask questions, or talk about local cloud testing and development. See you in KC! 🙌
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We're excited to officially launch lstk, the new CLI for working with LocalStack. lstk offers a better developer experience than the legacy CLI with more intuitive commands, no authentication friction, no python dependencies & more. Learn more here 👉 blog.localstack.cloud/introd…
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Beyond Bluesky: Building an AT Protocol Event Pipeline on AWS 🪈 AT Protocol is more than just Bluesky. It was purpose-built to accommodate countless use cases beyond short-form social media. blog.localstack.cloud/workin…

Beyond Bluesky: Building an AT Protocol Event Pipeline on AWS

AT Protocol is more than just Bluesky. This post explains what ATproto is, why it matters for event-driven apps, and how to build a reusable AWS pipeline for consuming it — including testing the full...

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This post explains what AT Protocol is, why it matters for event-driven apps, and how to build a reusable AWS pipeline for consuming it. We'll also test everything locally on LocalStack before touching a real AWS account. 🍻
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Announcing the LocalStack for Snowflake 2026.08.0 Release ❄️ This release improves query status reporting, metadata queries, ordered aggregates, pipes, and tags in the current emulator. Alongside this release, Snowflake-Next is entering preview. blog.localstack.cloud/locals…

Announcing the LocalStack for Snowflake 2026.08.0 Release

Snowflake-Next enters preview, while LocalStack for Snowflake 2026.08.0 improves long-running query handling, RESULT_SCAN, ordered aggregates, metadata queries, pipes, and tags.

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It is a new generation of the LocalStack for Snowflake emulator and is planned to become the default in the near future. (The preview is separate from the standard 2026.08.0 upgrade and is available by invitation or request.)
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