Can I use it like I’m used to using personal clouds?
Oh, well then what does one need that S3 gateway thing for then?
No, the rclone can work with the Tardigrade natively. But you of course can configure it to use an Tardigrade S3 Gateway or Gateway-MT too.
I’m unfamiliar with S3 gateways.
Is it to use for projects that use the Amazon AWS API?
It sounds like I don’t need it.
Yes, the Tardigrade S3 Gateway (locally hosted) and Gateway-MT (hosted SaaS) are designed to allow the S3-compatible software to use Tardigrade even if they are not adopted for Tardigrade.