We are a software provider who integrates our product with CMS software. We are switching over to WordPress and I'd like to ask the relative merits of Multisite vs. several single instances. I am a principal in our company and am not technical, so I want to get a general overview of the pros and cons from this community and not only rely on the opinion of a couple of my staff who may not have the complete picture.
Our clients all have different domains and are completely separate business entities. The core of my question deals with resources. I know we can quickly launch separate instances, but are we better off using multisite and launch several different instances from within that? Is there a threshold for how many instances under multisite (say 10 instances in multisite is fine but 20 bogs down everyone)? We have several different servers, I'd say we'd have about 10 clients per server.
Again, I'm not overly technical but I'd be interested in any feedback that people have in dealing with multisite. We'll be sharing some templates but the actual data on each site will be unique.