Salesforce.com’s platform landscape is ever-growing, and I’m sure that many of you have often wondered how the heck they’ve devised an architecture capable of supporting it all. You might be surprised to know that this (perhaps slightly out-of-date e.g. the document states 47k+ orgs) information is available in the form of a whitepaper on the Developerforce website!
Not only does this give you insight into the architecture of their multitenant platform but it becomes clear very quickly why the platforms works in the way that it does e.g. why use metadata or governor limits.
It is a heavy read but at 15-pages long it won’t take too long, and for anyone using the platform day-in-day-out it’ll give you a new-found appreciation for the tools you use.