How come supported search functionality is different between Bit Bucket cloud and server?

[John Lawlor]

With reference to:

https://confluence.atlassian.com/bitbucket/code-search-in-bitbucket-873876782.html

and:

https://confluence.atlassian.com/bitbucketserver/search-for-code-in-bitbucket-server-814204781.html

For instance in Bit Bucket cloud you can exclude projects from the search:

ext:js NOT project:myProject MyComponent

This is a feature requested in BSERV-9722

This is not supported in Bit Bucket Server. It doesn't make sense since Elastic Search is providing the search functionality.  

[Dave Theodore [Coyote Creek Consulting]]

The simple answer is that the only things the two products share is the name and that they use Git as their source control.  Bitbucket Cloud was an acquisition that Atlassian made a few years ago and (Stash, now called) Bitbucket was written internally. Users of the two tools tend to be pretty different, as well, so the Server version features tend to be tailored to the enterprise and the Cloud features tend to be tailored to smaller teams, open source teams, etc.