Category: AWS Lambda

In this 34th quarterly recap post, discover the most impactful AWS serverless launches, features, and resources from Q3 2026 that you might have missed.

AWS Lambda event source mappings now support queue consumption mode for Apache Kafka. Using Kafka Share Groups, you can scale consumer parallelism independently of partition count, with per-record acknowledgment, visibility timeouts, and automatic retries on self-managed Kafka 4.2 or later clusters.

Durable functions span many Lambda invocations, so per-invocation logs answer the wrong question. The Durable Execution Telemetry Exporter is an SDK plugin that emits one complete record per execution to any of 13 destinations with a one-line change, and a companion MCP server lets an AI agent query that data in plain language.

Learn how to build a five-step Agent Engine Optimization (AEO) scoring pipeline on AWS Lambda durable functions. Each checkpointed step suspends without incurring costs between stages and retries without re-spending on prior work, so you can score any page against five AEO signals and deploy the solution with an AWS SAM template.

Run a standard Node.js web server on AWS Lambda with Lambda Web Functions, a new type of Lambda function. Deploy it with one command or AWS CloudFormation and get a public HTTPS endpoint with no adapter layer and no servers to manage. See how one execution environment handles many concurrent requests and how active-CPU billing keeps the cost of waiting low.

AWS Lambda now exposes Availability Zone metadata through an endpoint in the execution environment, so your function can discover its AZ ID with an HTTP request. Use it to prefer same-AZ endpoints for services like ElastiCache, Amazon RDS, and MemoryDB, reduce cross-AZ latency and data transfer costs, and build AZ-aware resilience patterns.

AWS Lambda SnapStart now supports container image functions, reducing startup times from several seconds to as low as sub-second. Learn how SnapStart for container images works, how to enable it on new or existing functions, and best practices for latency-sensitive workloads.

Lambda durable functions checkpoint execution state to durable storage, and for regulated payment workloads that data is sensitive. This post shows how to configure a customer managed key in AWS KMS to encrypt durable execution data, define a least-privilege key policy, and verify encryption through AWS CloudTrail, all deployed with Terraform.

AWS Lambda now supports scalable network bandwidth for functions with 2,048 MB of memory or more running outside a VPC. Sustained throughput scales from 625 Mbps up to 3,000 Mbps at 10,240 MB, reducing execution times and per-invocation costs for latency-sensitive data processing workloads.

Many teams want to expose their AWS Lambda MicroVMs under a custom domain they own, and satisfy CORS for browser clients, without changing the application. This post shows how, using an Application Load Balancer that rewrites the Host header and forwards over AWS PrivateLink, deployed with the AWS CDK.