I am looking for a CMS as a backbone for front-end work and I like CraftCMS by its interface and structure, so I wonder if CraftCMS is capable for this project. In practice, most of the work will be done on front-end, but next to pageloads, there will be some Ajax requests to the server too and also will users need to log in.
Is Craft CMS (v3) realistically capable of handling around 10.000 logged in visitors simultaneously? I don't know all the details about the project yet, but is there something to say about this so far? Is it critical in CraftCMS? Or should it handle these amounts just fine? As 10.000 simultaneous users on the website looks like a lot to me.
Also, do you guys perhaps know what to look for in hosting specs in order to allow these amounts of simultaneous visitors to all have performant experience (both pageloads and ajax)?
Thanks a lot in advance!