did URL for objects in S3 changed recently?

Question

Traditionally, Object URL for S3 looked like this:

```
https://s3.us-west-2.amazonaws.com/bucketname/filename.ext
```

However, in the account that I created recently (about a month ago), the objects don't have indication of the region:

```
https://bucketname.s3.amazonaws.com/filename.ext
```

Additionally, I always knew that bucket names should be unique *within the region*; however, it looks now that they should be unique globally. There are some other changes in UI - for example, the console shows Region, which seems useless, since it shows *all* buckets.

Is there a summary of the changes? Feature spotlight only mentions Express One Zone; and search here in repost doesn't give anything either.

Riku_Kobayashi · Accepted Answer

Hello.

> Traditionally, Object URL for S3 looked like this:  
> 
> https://s3.us-west-2.amazonaws.com/bucketname/filename.ext

As stated in the document below, "https://s3.us-west-2.amazonaws.com/bucketname/filename.ext" is an old format and will be deprecated.  
Although it is scheduled to be discontinued, I think it can still be used as of September 2024.  
"https://bucketname.s3.amazonaws.com/filename.ext" is a URL in the format Virtual-hosted–style requests.  
https://docs.aws.amazon.com/AmazonS3/latest/userguide/VirtualHosting.html

> Additionally, I always knew that bucket names should be unique within the region; however, it looks now that they should be unique globally. There are some other changes in UI - for example, the console shows Region, which seems useless, since it shows all buckets.

I believe that bucket names being globally unique has remained unchanged since the beginning.  
At least in 2020, when I started using AWS, S3 bucket names had to be globally unique.  
https://docs.aws.amazon.com/AmazonS3/latest/userguide/bucketnamingrules.html  
> Bucket names must be unique across all AWS accounts in all the AWS Regions within a partition. A partition is a grouping of Regions. AWS currently has three partitions: aws (Standard Regions), aws-cn (China Regions), and aws-us-gov (AWS GovCloud (US)).

Jérôme GUYON · Answer

Hello, 
- Bucket names are globally unique - across regions  (within a partition) : https://docs.aws.amazon.com/AmazonS3/latest/userguide/bucketnamingrules.html#general-purpose-bucket-names
- S3 Console is global and shows all buckets. Buckets are created within a region.
As far as I know, that hasn't changed.

For the object download url, xx.s3.amazonaws.com is probably the us-east-1 / and global endpoint (maybe your buckets are located in us-east-1), whereas the others are regional endpoints, corresponding to the bucket location.

About Express One Zone : 
* https://docs.aws.amazon.com/AmazonS3/latest/userguide/s3-express-differences.html
* https://press.aboutamazon.com/2023/11/aws-announces-the-general-availability-of-amazon-s3-express-one-zone

did URL for objects in S3 changed recently?

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