Can we generate a custom URL to access the s3 bucket object lifetime?

Hi, Yes, there is a way to do that by using the Pre-Signed URL.(https://docs.aws.amazon.com/AmazonS3/latest/userguide/ShareObjectPreSignedURL.html) you can also verify TTL (time to live) for the same URL. However, I would never suggest following this process for private AWS access. instead of that use a bucket policy for DynomoDB and S3 to access the s3 bucket (A secure way to access it). For public uses always attached TTL for security.

You can do that in several ways and choose a right option based on the consumers of the object, data sensitivity and access controls you would like to have.

Some resources that could help you - https://aws.amazon.com/premiumsupport/knowledge-center/cloudfront-https-requests-s3/ https://docs.aws.amazon.com/AmazonS3/latest/userguide/access-bucket-intro.html https://aws.amazon.com/premiumsupport/knowledge-center/read-access-objects-s3-bucket/ https://docs.aws.amazon.com/AmazonS3/latest/userguide/ShareObjectPreSignedURL.html (Short Living URL - Max. 12 hours life time at this moment)