Individual skill

aws-lambda-managed-instances

Evaluates, configures, and migrates workloads to AWS Lambda Managed Instances (LMI). Runs Lambda Event Functions (standard Lambda) on EC2 instances in the user's account while AWS manages provisioning, patching, scaling, routing, and load balancing. Triggers when queries mention Lambda Managed Instances, LMI, capacity providers, multi-concurrent execution environments, EC2-backed Lambda, persistent Lambda instances, PerExecutionEnvironmentMaxConcurrency, CapacityProviderConfig, cold start elimination via dedicated instances, SOCI (Seekable OCI) image lazy loading, migrating Lambda Event Functions to managed instances, or cost comparison between Lambda Event Functions and LMI with Savings Plans or Reserved Instances. Also covers long-running and asynchronous workloads and the 90-minute (5400s) function timeout for asynchronous and event-source-mapping (SQS, Kinesis, DynamoDB Streams / ESM) invocations, including how to raise the function timeout up to 90 minutes / 5400s and the related duration limits.

skills/specialized-skills/serverless-skills/aws-lambda-managed-instances/SKILL.md

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Repository stars (not skill ratings): 3,434
Repository last updated: Nov 7, 2026
License: Apache-2.0

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SKILL.mdcore · 16,523 bytes
assets/sqs-processor/template.yamlasset · 3,347 bytes
references/configuration-guide.mddoc · 6,484 bytes
references/cost-comparison.mddoc · 924 bytes
references/infrastructure-setup.mddoc · 6,414 bytes
references/migration-patterns.mddoc · 4,261 bytes
references/thread-safety.mddoc · 5,578 bytes
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# AWS Lambda Managed Instances (LMI)

Runs Lambda Event Functions on EC2 instances in the user's account while AWS manages provisioning, patching, scaling, routing, and load balancing. Combines Lambda's developer experience with EC2's pricing and hardware options.

**Works best with** the [AWS MCP server](https://docs.aws.amazon.com/aws-mcp/) for sandboxed CLI execution and audit logging. All guidance also works with standard AWS CLI or SAM CLI.

**Note:** Confirm regional availability, quotas, and instance type offerings against current AWS documentation before production deployment.

## Quick Decision: Is LMI Right for This Workload?

| Signal | LMI is a strong fit | Lambda Event Functions are better |
|--------|---------------------|---------------------------|
| Traffic | Steady, predictable, 50M+ req/mo | Bursty, unpredictable, long periods of no traffic |
| Duration | Long-running asynchronous/ESM jobs that exceed 15 min (up to 90 min on LMI): ETL/data processing, media transcoding, ML inference, financial calc, web scraping | Short invocations; synchronous work needing >15 min (not supported on any Lambda) |