I am interested in having a blog on my site which will be in a subdirectory of the main wordpress homepage

e.g. website.com/blog

however, I am interested to know if there is a way to host the blog on a separate server - primarily because I don't want to overload the server for the rest of the site if there is a lot of traffic going to the blog. I am keen on the idea of it being a subdirectory though.

Anyway - just thought there would be someone smarter than me who might have a bright idea :)