AWS Security Groups Now Show Related Resources

Source: Dev.to

What’s New?

There’s a new “Related resources” tab in the EC2 Security Groups console. It scans your AWS resources and displays which ones are using the selected security group. In the example, it found 2 resources (an ENI and an EC2 instance) linked to the jump-box-sg security group out of 69 total resources scanned.

Why This Matters

If you’ve ever tried to delete or modify a security group and wondered “what’s actually using this?”, this feature saves you time. Previously you had to:

• Run CLI commands with filters
• Search through multiple services manually
• Use third‑party tools or scripts

Now it’s just one click away.

Use Cases

• Auditing: Quickly identify orphaned or over‑permissive security groups.
• Impact analysis: Know exactly what you’ll affect before modifying rules.
• Cleanup: Confidently delete unused security groups.
• Compliance: Document which resources share network access policies.

Small quality‑of‑life improvements like this make a real difference in day‑to‑day infrastructure management.