Serverless ICYMI Q1 2026

This article is a Q1 2026 quarterly recap of major AWS serverless innovations and launches.

• AWS Lambda introduces durable functions for fault-tolerant, long-running workflows with automatic checkpointing
• Lambda now supports .NET 10 runtime and Availability Zone metadata for AZ-aware routing
• Maximum payload size increased to 1 MB for Lambda, SQS, and EventBridge
• Amazon Bedrock adds six open-weight models and Claude Opus/Sonnet 4.6
• Bedrock AgentCore adds semantic tool search, Policy for agent governance, and stateful MCP support
• Strands Agents SDK enables building AI agents in few lines of code
• Step Functions introduces enhanced TestState API for workflow validation before deployment
• EventBridge Scheduler provides resource count metrics for quota monitoring
• DynamoDB global tables now support cross-account and cross-region replication
• ECS Managed Instances integrate with EC2 Capacity Reservations and NLB deployment strategies

Q1 2026 highlights significant advances in serverless AI capabilities, workflow reliability, and infrastructure flexibility across AWS services.