Separate Blog connected to website

Hey everyone,
I have an existing website that’s up and running. Now I want to add a blog to it using a different template. I know I can just copy paste the pages into my existing project, however I’m wondering if there’s another way to do it that is easier for the people running the blog in the future.

Would I be able to run the blog separately (another project) but still connect it with the same domain (as in and maybe even pull content from it on my exisiting website? Not sure if that is wise, I’m just hoping for some input on this.