As you have already realized this is the Azure Infrastructure Architect Map by Stephane Eyskens (@stephaneey). Luckily it is available on several way such as Azure Developer Community Blog and Mindmap Maker.
You can find some explanation (behind the attachment icon) and external links (behind the link icon) for the better understanding if you open the Mindmap Maker link.
Last but not least you can find the most critical areas – HA, DR, Monitoring, Backup & Restore, Network, etc – on map.
I will provide an another one soon. 🙂