Sharing Large Files with Customers — Automating S3 + CloudFront Signed URLs

Thu, 14 May 2026 00:00:00 +0000

TL;DR: When you need to share large files or directories with customers, this script automates the entire flow — zip compression, S3 upload, and CloudFront Signed URL generation — in a single command: sharelink.py <path>. The generated link is valid for 7 days.

Key Terms: CloudFront Signed URL = A time-limited URL that grants access to a CloudFront distribution, signed with an RSA key pair | S3 = Amazon Simple Storage Service, object storage | OAC = Origin Access Control, restricts direct S3 access so files are only accessible through CloudFront

Python on Build on AWS

Sharing Large Files with Customers — Automating S3 + CloudFront Signed URLs

Sharing Large Files with Customers — Automating S3 + CloudFront Signed URLs