Ask HN: What blog engine to use for startup?

I'd like to keep a blog for the startup that I'm working on, so I'm looking for something lightweight that is easy to set up and is good for SEO. I read that hosted blogs (such as medium) get a SEO penalty compared to blogs that you host on your own server with your own domain, but I don't know if that's true. I don't really want to spend more than an hour setting something up, so a lightweight and easy approach would be great.

What do you guys recommend?