Category: Announcements

Today, Amazon API Gateway announces support for dynamic routing rules for custom domain names in all supported AWS Regions. This new capability enables you to route API requests based on HTTP header values, either independently or in combination with URL paths. In this post, you will learn how to use this new capability to implement routing strategies such as API versioning and gradual rollouts without modifying your API endpoints.

Today, AWS announces the open-source AWS Serverless Model Context Protocol (MCP) Server, a tool that combines the power of AI assistance with serverless expertise to enhance how developers build modern applications. The Serverless MCP Server provides contextual guidance specific to serverless development, helping developers make informed decisions about architecture, implementation, and deployment. This post describes how the Serverless MCP Server works with AI coding assistants to streamline serverless development.

Amazon DCV has evolved as a powerful remote display protocol, enabling secure high-performance remote desktop access and application streaming. This blog talks about how DCV remote display capabilities are now integrated with Amazon Linux 2023 (AL2023).

Effective logging is an important part of an observability strategy when building serverless applications using AWS Lambda. Lambda automatically captures and sends logs to Amazon CloudWatch Logs. This allows you to focus on building application logic rather than setting up logging infrastructure and allows operators to troubleshoot failures and performance issues more easily. On May […]

Effective August 1, 2025, AWS will standardize billing for the initialization (INIT) phase across all AWS Lambda function configurations. This change specifically affects on-demand invocations of Lambda functions packaged as ZIP files that use managed runtimes, for which the INIT phase duration was previously unbilled. This update standardizes billing of the INIT phase across all runtime types, deployment packages, and invocation modes. In this post, we discuss the Lambda Function Lifecycle and upcoming changes to INIT phase billing. You will learn what happens in the INIT phase and when it occurs, how to monitor your INIT phase duration, and strategies to optimize this phase and minimize costs.

This post is written by Julian Wood, Principal Developer Advocate, and Andrea Amorosi, Senior SA Engineer. You can now develop AWS Lambda functions using the Node.js 22 runtime, which is in active LTS status and ready for production use. Node.js 22 includes a number of additions to the language, including require()ing ES modules, as well as changes to the runtime […]

This post is written by Julian Wood, Principal Developer Advocate, and Leandro Cavalcante Damascena, Senior Solutions Architect Engineer. AWS Lambda now supports Python 3.13 as both a managed runtime and container base image. Python is a popular language for building serverless applications. The Python 3.13 release includes a number of changes to the language, the implementation, and the […]

AWS Lambda is introducing a new code editing experience in the AWS console based on the popular Code-OSS, Visual Studio Code Open Source code editor. This brings the familiar Visual Studio Code interface and many of the features directly into the Lambda console, allowing developers to use their preferred coding environment and tools in the cloud. […]

This blog post is written by Pranav Chachra, Principal Product Manager, AWS. In 2019, AWS introduced Zone Groups for AWS Local Zones. Today, we’re announcing that we are working on extending the Zone Group construct to Availability Zones (AZs). Zone Groups were launched to help users of AWS Local Zones identify related groups of Local […]

This post is written by James Ngai, Senior Product Manager, AWS Lambda, and Aneel Murari, Senior Specialist SA, Serverless. Today, AWS Lambda is announcing new recursive loop detection APIs that allow you to set recursive loop detection configuration on individual Lambda functions. This allows you to turn off recursive loop detection on functions that intentionally use […]