There is something I never understood about people who talk about scaling. Surely the best way to scale something is simply to have multiple instances with so many users on each one. You can then load balance between them. Why people feel the need to make a single instance scale to the moon I have no idea.

It’s like how you don’t need to worry about MS Word scaling because everyone has a copy on their own machine. You could very much do the same thing for cloud services.