Spaces API and S3 compatibility question

I am just seeking clarity in understanding the product offering as it pertains to being S3 compatible.

My client uses a piece of software that currently integrates with Aamazon S3 by asking for only:

• the API Access key
• the API Secret key
• a default bucket

The endpoints are obviously hard coded but is it just the urls that would need to be replaced in the code and all other aspects of the Amazon S3 API should work with DO’s Spaces API?

For clarity, I am looking to modify the S3 Media Maestro paid WordPress plugin (https://flyplugins.com/s3-media-maestro/) to adapt to the DO Spaces service and of course I’ll need to pay to play, but first I’m hoping someone might have some insight.

Is it as simple as changing Amazon url’s to DO Spaces?