Simon Willison’s Weblog

Amazon S3: Versioning Proposal. The us-west-1 S3 bucket region now optionally supports versioning—once enabled on a bucket, all previous versions of keys will be preserved.

Posted 24th January 2010 at 1:38 pm

Recent articles

My Lethal Trifecta talk at the Bay Area AI Security Meetup - 9th August 2025
The surprise deprecation of GPT-4o for ChatGPT consumers - 8th August 2025
GPT-5: Key characteristics, pricing and model card - 7th August 2025

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