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Idle resources · Medium severity

Idle Lambda Function

An uninvoked function costs nothing to hold, but any provisioned concurrency configured on it is billed continuously to keep execution environments warm for traffic that is not arriving.

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AWSprovider
Mediumseverity
Savingswhere it shows up
Guidedfix, after a review

AWS

Found, explained, fixed.

Findings with a dollar figure attached, idle, oversized, orphaned, unscheduled and undiscounted spend.

01

Detect

ZopNight checks this automatically across AWS, with read-only access to the account.

02

Explain

Every finding says exactly what to change: Delete the idle Lambda function. Where the saving can be proven it is priced; where it cannot, the finding says so.

03

Fix

After a guided review, where you confirm the change, ZopNight deletes the resource, then checks the change took.

Applies to
Lambda Functions on AWS
The fix, by hand
  1. Check CloudWatch Invocations metric for this function.
  2. Remove any provisioned concurrency if not needed.
  3. Archive the code to S3 before deletion.

ZopNight does this for you after a guided review.

Category
Idle resources. Resources running but doing no useful work: zero invocations, no connections, no traffic.
Where it appears
The Savings tab of Recommendations, with every affected resource listed.
Rule ID
RC-010
Full reference

Idle Lambda Function

Related checks

See the idle resources in your account.

Connect a read-only role and the first pass runs on your own estate. This check, and the rest of the catalogue, with it.

Prefer to talk it through first? Book 20 minutes with the team.

  • $30M+annualised cloud spend under management
  • 550K+resources tracked since launch
  • 20-60%off the bill in the first month
  • SOC 2Type II report, plus ISO 27001

Figures published on zop.dev.

Multi-cloud automation· Production-ready in 30 min· SOC 2 · ISO 27001· 20–60% off the bill, first month· 4 platforms · 1 console· Multi-cloud automation· Production-ready in 30 min· SOC 2 · ISO 27001· 20–60% off the bill, first month· 4 platforms · 1 console·