Previously limited to 15 minutes, AWS Lambda function timeouts for asynchronous and event source mapping invocations on Lambda Managed Instances have increased to 90 minutes. This extension facilitates workloads such as media transcoding, complex financial simulations, AI inference, and batch processing without needing architectural workarounds.
Lambda Managed Instances handle infrastructure management while providing longer execution windows, improving cost and operational efficiency. Though synchronous invocations remain capped at 15 minutes, asynchronous durable functions can now checkpoint and replay steps for up to one year, supporting resilient, lengthy processes.
Source & further reading
AWS Lambda now supports 90-minute function timeout on Lambda Managed Instances ↗Source published 2026-09-09. This report was prepared with AI assistance from the linked primary-source material. Claims and limitations should be checked against the original announcement or research.