Power BI Backup solution

Hi Gerelyn67  I think this needs to be split into two perspectives: 

#1. Report & semantic model design. Backup my DEFINITION (e.g. report's design, visuals configurations ) and the semantic model schema (e.g. tables, relations, etc.) 

#2. Report & data. I have a Power BI report (s) in its PBIX with data loaded that I want to back up right after we push of data. 

If you are looking for a third-Party Power BI Management Product, the only one I know that seems like what you are asking for is https://www.powerbisentinel.com/  "Discover how Power BI Sentinel can elevate your organization's data governance and security strategy." welcome to give it a try. 

I'm going to assume you want a "do-it-our-selves" solution and need advise on the alternatives  😉 and in this context, I think the resources shared by  AntoineW  are perfect for #1. Report & semantic model design, the idea is for you to move away from PBIX version of your reports and make them Power BI projects and the code version controlled via Git, this way, the code is you backup! You can recreate your Report's design any point in time you need via commits, branches, tags, etc. (git version control theory is out of the scope for this short answer)... but this requires yes, that you migrate your reports to Fabric with its implications in terms of work, costs, etc. 

As suggested by AntoineW  with Cloud Storage & Manual/Scripted Backups are for #2. Report & data, that is juust want to keep your existing PBIX reports and have them backed up & secure, both alternatives as suggested are good, BUT I STRONGLY SUGGEST YOU TO MOVE AWAY FROM PBIX AS SOON AS POSSIBLE!  And this seems to be the perfect opportunity to do it and argument in favor of moving your reporting infrastrcuture to Fabric because all the benefits associated with SaaS solutions. 

Ufff, rather long answer but I hope further clarifies and helps with your decision, if it does, give us a kudos! and mark as solution if appropiate... all the best!