Cloud & AWS

S3 Bucket Policies vs IAM Policies: What’s the Difference?

September 21, 2026

Learn the difference between S3 bucket policies and IAM policies, how AWS evaluates permissions, when to use each, and how to troubleshoot AccessDenied errors.

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AWS Lambda Cold Starts: What Causes Them and How to Reduce Them

September 5, 2026

What actually causes an AWS Lambda cold start, which runtimes and VPC configs make it worse, and the concrete ways to reduce it — provisioned concurrency, smaller packages, runtime choice.

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