Amazon Cloudfront forces you to put versioning if you want to expire objects manually, check out this page: http://docs.amazonwebservices.com/AmazonCloudFront/2

Amazon Cloudfront forces you to put versioning if you want to expire objects manually, check out this page: http://docs.amazonwebservices.com/AmazonCloudFront/2008-06-30/GettingStartedGuide/index.html?NextSteps.html#Expiration http://docs.amazonwebservices.com/AmazonCloudFront/2008-06-3... (under `Object expiration`). Unless you specify "Cache-control: no-cache" header you aren't really sure how the browser caches your static files (especially if the user is behind a proxy - and even "Cache-control: no-cache" can easily be ignored).