AWS Lambda Managed Instances Now Support Up to 32 GB Memory and 16 vCPUs

AWS Lambda increased resource limits for functions on Managed Instances, allowing up to 32 GB of memory and 16 virtual CPUs to handle compute-intensive workloads.

By Lucas Hayes · Editorial pseudonym · 2026-03-27 · 1 min read

AI-ASSISTED REPORTING · RETROSPECTIVE ARCHIVE

Retrospective edition: 2026-03-27. Source published: 2026-03-27. Added to this archive: 2026-11-03. This briefing was prepared later from the linked announcement; it was not published on this website on the historical edition date.

Previously limited to 10 GB memory and about 6 vCPUs, Lambda functions running on managed EC2 instances can now be configured with customizable memory-to-vCPU ratios (2:1, 4:1, or 8:1). This flexibility supports diverse workload profiles, from CPU-heavy to memory-heavy tasks.

This enhancement enables efficient execution of large-scale data processing, media transcoding, and simulations without infrastructure management. The feature is broadly available across AWS regions offering Lambda Managed Instances and configurable via multiple AWS tools, according to AWS announcements.

Source & further reading

AWS Lambda supports up to 32 GB of memory and 16 vCPUs for Lambda Managed Instances ↗

Source published 2026-03-27. 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.