There were similar posts in this forum previously, but a period from now.
I used Spacedesk since I was a student, it was a wonderful experience.
And now I work in a business about 300 people, but only ME will use Spacedesk.
Can I use this software in my business? or do I need to buy a licence for legal usage?
No small scale licensing yet. Current BETA can be used for free until expiry. This applies to business and private users. Future small scale licenses will become available as in-app-purchases from the app stores (Windows/Android/iOS). Possibly there will always be a basic free version, too. Large scale commercial corporate license upon request.