How do I transfer Offc 2013 from one computer to another?

I downloaded the software from softwarespeedy.com dated Aug 2013. I have codes, registration#, etc. I just want to know this. When I get the new computer, how do I transfer the Office to the new computer.
One last thing. The company is no longer in business (natch!). And I have a "backup disc on DVD for Office Professional 2010. Is that the same as the download?

Possibly useful links:

https://windowsreport.com/transfer-o...erent-pc-user/

https://www.cnet.com/news/office-201...to-another-pc/

https://social.technet.microsoft.com...um=officeitpro

Note: Office 2010 and Office 2013 are NOT the same.