AWS Compute Blog

Introduced at re:Invent 2022, SnapStart is a performance optimization that makes it easier to build highly responsive and scalable applications using AWS Lambda. The largest contributor to startup latency (often referred to as cold-start time) is the time spent initializing a function. This post discusses ‘Priming’, a technique to further optimize startup times for AWS Lambda functions built using Java and Spring Boot.

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.

In this post, we review best practices for capacity management and fault tolerance with Outposts rack followed by an example of how the Outposts API can be used to build an automated monitoring and alerting system to highlight potential resiliency issues.

This post explores the importance of distributed tracing for operating serverless applications and announces an important update to tracing behavior for AWS Lambda, which streamlines how trace context is handled in PassThrough mode. This blog post will demonstrate how this change gives you better control over how your Lambda functions handle tracing with AWS X-Ray through practical examples. Whether you’re building new applications or operating existing ones, this update helps you achieve more predictable and efficient tracing across your serverless applications built using Lambda.

This post is written by Brian Daugherty, Principal Solutions Architect, Leonardo Queirolo, Senior Cloud Support Engineer, and Reet Kundu, Senior Cloud Support Engineer Powering generative AI/ML solutions with AWS Outposts Servers at Edge locations Many organizations are vigorously pursuing generative AI initiatives in the Amazon Web Services (AWS) cloud today because generative AI drive advances […]

This blog post authored by Elie Elmalem, Associate Scale Solutions Architect When implementing event-driven architectures, customers frequently need to enrich their incoming events with additional information to make them more valuable for downstream consumers. Traditionally, customers using Amazon EventBridge would accomplish this by writing AWS Lambda functions to augment their events with supplementary data. However, […]

Welcome to the 28th edition of the AWS Serverless ICYMI (in case you missed it) quarterly recap. At the end of a quarter, we share the most recent product launches, feature enhancements, blog posts, videos, live streams, and other interesting things that you might have missed! In case you missed our last ICYMI, check out […]

This post is written by Perry Wald, Principal GTM SA, Hybrid Edge, Eric Vasquez Senior SA Hybrid Edge, and Fernando Galves Gen AI Solutions Architect, Outposts AWS Outposts is a fully managed service that extends AWS infrastructure, services, APIs, and tools to customer premises. Outposts servers launched in 2022, a 1U or 2U rack-mountable host, […]

AWS announces new integration capabilities for Amazon EventBridge and AWS Step Functions, enabling direct communication with private APIs using AWS PrivateLink and Amazon VPC Lattice. This enhancement streamlines secure application interactions across private networks, on-premises infrastructure, and cloud platforms, offering improved security, simplified architecture, and enhanced performance for enterprise-level deployments.

This post is written by Arun Kumar N C, Technical Account Manager; Debapriyo Jogi, Technical Account Manager; and Ashish Nagaraj, Cloud Support Engineer 2 Organizations are increasingly adopting hybrid cloud architectures that combine the scalability of cloud computing with the control and compliance benefits of on-premises infrastructure. AWS Outposts extends AWS infrastructure, AWS services, APIs, […]