News, tutorials, and insights from the LocalStack team on cloud emulation, product showcases, and local development practices.https://blog.localstack.cloud/https://blog.localstack.cloud/aws-lambda-web-functions-are-here/https://blog.localstack.cloud/aws-lambda-web-functions-are-here/AWS Lambda Web Functions let you run full web apps and API backends on Lambda, with no adapters or custom configuration. LocalStack supports them from day one, so you can build and test those apps locally, alongside the rest of your application, before deploying to AWS.Tue, 13 Oct 2026 00:00:00 GMThttps://blog.localstack.cloud/working-with-atproto-on-aws/https://blog.localstack.cloud/working-with-atproto-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 stack on LocalStack before touching a real account.Thu, 03 Sep 2026 00:00:00 GMThttps://blog.localstack.cloud/stop-prompting-your-ai-agent/https://blog.localstack.cloud/stop-prompting-your-ai-agent/Stop writing bigger and bigger prompts for your AI coding agent. Learn how to build an AI-native AWS development environment using Cursor Rules, agent skills and plugins, the AWS MCP Server, and LocalStack so your agent has what it needs to build, test, and debug AWS applications locally before touching a real cloud account.Tue, 01 Sep 2026 00:00:00 GMThttps://blog.localstack.cloud/what-aws-nyc-told-us-about-agentic-ai/https://blog.localstack.cloud/what-aws-nyc-told-us-about-agentic-ai/One theme kept coming up in nearly every one of the hundreds of conversations we had at AWS Summit NYC: AI agents are already writing infrastructure code, and engineering teams are still figuring out how to test it safely.Wed, 08 Jul 2026 00:00:00 GMThttps://blog.localstack.cloud/managing-cloud-costs-cloudburn/https://blog.localstack.cloud/managing-cloud-costs-cloudburn/How to shift cost policy left into your local development workflow using CloudBurn and LocalStack, with a pre-commit hook that tells you whether your IaC changes made things better or worse before you commit.Tue, 02 Jun 2026 00:00:00 GMThttps://blog.localstack.cloud/i-tried-app-inspector/https://blog.localstack.cloud/i-tried-app-inspector/App Inspector is LocalStack's built-in observability layer that shows you every AWS API call, IAM permission evaluation, and full request/response payload your app makes locally, before it ever hits a real AWS account.Thu, 07 May 2026 00:00:00 GMThttps://blog.localstack.cloud/introducing-app-inspector/https://blog.localstack.cloud/introducing-app-inspector/App Inspector gives engineering teams full transparency within their local development environment by continuously monitoring your emulated AWS environment to surface hidden issues, helping your team understand what is happening, where, and why.Wed, 29 Apr 2026 00:00:00 GMThttps://blog.localstack.cloud/what-is-localstack/https://blog.localstack.cloud/what-is-localstack/New to LocalStack but familiar with AWS? Learn what LocalStack is, why it speeds up your development workflow, and how to get your first local AWS environment running in minutes.Mon, 27 Apr 2026 00:00:00 GMThttps://blog.localstack.cloud/3-things-to-know-about-localstack/https://blog.localstack.cloud/3-things-to-know-about-localstack/Let's look at 3 things you may not be aware of about LocalStack for AWS including that it's free for many use cases, has no CI limits and is validated against thousands of tests to ensure API accuracy.Fri, 10 Apr 2026 00:00:00 GMThttps://blog.localstack.cloud/wth-are-ai-skills/https://blog.localstack.cloud/wth-are-ai-skills/AI agents can reason, but without structured actions they still guess at real-world workflows. This post explores the concept of AI agent skills and shows how LocalStack Skills provide deterministic, guardrailed automation for local AWS development.Tue, 07 Apr 2026 00:00:00 GMThttps://blog.localstack.cloud/aws-deep-dives-sns/https://blog.localstack.cloud/aws-deep-dives-sns/Amazon SNS (Simple Notification Service) is a fully managed publish-subscribe (pub/sub) messaging service that enables fan-out communication between applications and directly to end users.Tue, 03 Mar 2026 00:00:00 GMThttps://blog.localstack.cloud/first-local-aws-app-in-4-steps/https://blog.localstack.cloud/first-local-aws-app-in-4-steps/Learn how to build and run your first AWS-style application entirely on your local machine. This step-by-step guide walks through installing LocalStack, configuring authentication, and deploying a real serverless app without deploying to AWS.Tue, 20 Jan 2026 00:00:00 GMThttps://blog.localstack.cloud/aws-deep-dives-sqs/https://blog.localstack.cloud/aws-deep-dives-sqs/Amazon SQS (Simple Queue Service) is an easy to use and inexpensive way to decouple portions of a serverless application through a secure, cloud-based queueing system. Let's explore how that's useful and how to use it.Thu, 25 Sep 2025 00:00:00 GMThttps://blog.localstack.cloud/aws-deep-dives-ses/https://blog.localstack.cloud/aws-deep-dives-ses/Amazon SES (Simple Email Service) is a fast and cost-effective way to send bulk or programmatic emails from your application. This post explores how to get it set up on AWS and how to build and test an email workflow locally using LocalStack.Thu, 21 Aug 2025 00:00:00 GMThttps://blog.localstack.cloud/testing-your-serverless-app-like-a-pro/https://blog.localstack.cloud/testing-your-serverless-app-like-a-pro/Writing tests for serverless apps often feels like herding cats in the cloud. In this tutorial, learn how to run real integration tests on your AWS stack, including S3, Lambda, SQS, and DynamoDB, using LocalStack, pytest, and boto3.Thu, 07 Aug 2025 00:00:00 GMThttps://blog.localstack.cloud/why-i-run-my-serverless-apps-locally/https://blog.localstack.cloud/why-i-run-my-serverless-apps-locally/Tired of waiting on CloudFormation, racking up bills, and debugging invisible resources? Learn how to run a real serverless app (S3, Lambda, SQS, and DynamoDB) entirely on your laptop using LocalStack, with step-by-step commands and explanations.Thu, 24 Jul 2025 00:00:00 GMThttps://blog.localstack.cloud/5-localstack-features-youre-sleeping-on/https://blog.localstack.cloud/5-localstack-features-youre-sleeping-on/LocalStack is evolving beyond AWS, but many of its most powerful features still focus on improving the AWS development experience. In this post, we highlight 5 AWS-centric features you might be missing that can speed up your local development, improve your testing, and help you build more resilient apps.Mon, 30 Jun 2025 00:00:00 GMThttps://blog.localstack.cloud/introducing-localstack-new-aws-tiers-expanded-snowflake-support/https://blog.localstack.cloud/introducing-localstack-new-aws-tiers-expanded-snowflake-support/These changes reflect the creativity and curiosity we see in our users every day. Built from community feedback for developers ready to experiment with what's next.Tue, 20 May 2025 00:00:00 GMThttps://blog.localstack.cloud/terraform-and-aws-cli-on-localstack/https://blog.localstack.cloud/terraform-and-aws-cli-on-localstack/AWS offers multiple ways to create and manage cloud resources. Two popular tools are the AWS CLI (Command Line Interface) and Terraform, each with its own strengths and trade-offs. Let’s explore the process of creating resources using both AWS CLI and Terraform, and dive into the key differences between these approaches.Mon, 21 Oct 2024 00:00:00 GMThttps://blog.localstack.cloud/2023-09-07-localstack-has-joined-aws-marketplace-to-streamline-local-cloud-development-testing/https://blog.localstack.cloud/2023-09-07-localstack-has-joined-aws-marketplace-to-streamline-local-cloud-development-testing/Announcing the availability of LocalStack's Cloud Emulator to facilitate local cloud development and team collaboration in the AWS Marketplace.Thu, 07 Sep 2023 00:00:00 GMT