LeftSize shifts cloud responsibility left to developers.

Instead of a central FinOps or Platform team manually reviewing cloud spend and chasing down resource owners, LeftSize automatically scans your AWS and Azure infrastructure and creates GitHub issues directly in the repositories that own those resources.

What LeftSize detects:

• Cost Optimization - Idle VMs, unattached disks, oversized instances, unused load balancers, old snapshots etc
• Security - Unencrypted storage, public S3 buckets, open security groups, missing encryption
• Governance - Missing ownership tags, naming convention violations, policy compliance
• End-of-Life - Outdated VM series, deprecated services, expiring support versions

How it works:

1. Install the LeftSize GitHub App on your repositories
2. Add the LeftSize Action to run on a schedule (daily/weekly)
3. LeftSize scans your cloud infrastructure and creates issues with:
   • Clear explanation of the problem
   • Estimated cost savings or risk assessment
   • Step-by-step remediation instructions
   • Ready-to-use CLI commands and Terraform snippets

Interact naturally via comments:

• @leftsize explain - Get detailed context
• @leftsize howto - Step-by-step fix instructions
• @leftsize snooze 14d - Temporarily dismiss
• @leftsize ignore reason="intended" - Mark as accepted risk

Why shift left?

Developers know their resources best. By surfacing cloud issues as GitHub issues - right where developers already work - LeftSize enables faster remediation, better accountability, and a culture of cloud ownership. No more spreadsheets, no more ticket ping-pong, no more "who owns this?"

LeftSize: The cloud optimization platform that meets developers where they are.