Is Dropbox a default option in Brightspace, or an "extra"?

I have been using Brightspace since I started teaching in 2019 and have grown to love the platform (having used Web-CT/Blackboard and Moodle in a previous role). I recently started as a part-time sessional instructor for another college, and thankfully, they also are using Brightspace. However, a third-party "lab" platform is also being used without integration, and they aren't using Dropbox for assignments right within Brightspace itself. So my question, is the assignment Dropbox I used previously and extra add-on or is it a default feature within Brightspace? The coordinator I'm working with was completely unaware of the Dropbox thing.
Thanks!
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