Hosted RPA in general requires some Azure Active Directory knowledge and skills to set up, because you would essentially be registering and setting up a VM. It might take some time if you have never done it. The licensing itself may cost a bit extra. Usually, in an organizational setup, you would already have those, but if you do not use Azure AD in your organization, or if this is more of a personal setup, you may not have it.
I would in general suggest getting an expert help you with this, such as an IT service provider, an MS365 reseller or a similar company who can help you set it up. It would usually likely not cost a lot to have them do it, as they'd be experts and would not take a lot of time.
If you went with an "alternative", you'll find that if you don't have a server of your own, getting a VM set up for you will also take skill and time (or having a solution provider do it for you). As far as I know, other RPA vendors do not even offer hosting a machine on their servers at all. MS is the only one who does it currently. So, you would not get it out-of-the-box with anyone else anyway, and would have to find a hosting provider separately.
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