Category: AWS Lambda

This blog demonstrates how to leverage Amazon S3 presigned URLs to allow your users to securely upload files to S3 without requiring explicit permissions in the AWS Account. This blog post specifically focuses on the security ramifications of using S3 presigned URLs, and explains mitigation steps that serverless developers can take to improve the security of their systems using S3 presigned URLs.

In this post, you will learn methods for network monitoring in AWS Lambda functions and how to apply them to your scenarios.

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 […]

In this post, you learn how to use AWS serverless technologies, such as Amazon EventBridge and AWS Lambda, to build an integration between Quick Service Restaurants (QSRs) and online ordering and food delivery aggregators. These aggregators have taken off as an option to QSRs to expand their consumer base, enabling them with delivery options to help grow their businesses.

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.

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 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 authored by Anton Aleksandrov, Principal Solution Architect, AWS Serverless and Daniel Abib, Senior Specialist Solutions Architect, AWS Serverless application developers may commonly encounter scenarios where they need to transport large payloads, especially when building modern cloud applications that need rich data. Examples include analytics services with detailed reports, e-commerce platforms with extensive […]