AWS, no need to present it.
But how much do you understand it?
Your R&D probably do, and as a PM thst works closely with R&D in many interfaces, you should speak the lingo and have good understanding.
When I talk about AWS, it might be that in your case it is Google cloud, or MS Azure, so just switch ;-).
So back to AWS. As PM you should have good understanding of cloud computing concepts, security aspects, pricing models.
If AWS is your case, there are so much learning materials for you, and many of thosr are free or with very low cost if at all.
I can recommend you as a starter, to take the AWS Cloud Practitioner certification course (~8h course). It covers many of the topics I mentioned, and give you also more background around other services beyond computing that can be used. AWS did a great job in providing everything as a service.
It is very easy to try fast and fail fast with it, and iterate. So your R&D can support your crazy features with minimum overhead.
It will help in customer technical discussions, as well as in solution reviews. Very handy knowledge.
If you are on for a good challenge, your R&D and you if you want, can raise the bar and do the AWS architect associate certification. It will require much bigger time investment though (100-120h investment). I recommend you the AWS materials as well as a Udemy course (https://www.udemy.com). Very structured course.
Cloud yourself... Happy to assist!
Dror