In a webmaster hangout on YouTube, Google’s John Mueller talked about the difference between subdomains and subdirectories. For example, you could host your blog at blog.example.com, or www.example.com/blog.
John Mueller says that you can use both:
“In general, we see these the same. I personally try to keep things together as much as possible, so if it is the same site, then try to put them on the same site essentially. And use subdomains where things are really slightly different.
But there are lots of really strong opinions on this, but from my point of view, this is something that could go either way.
And if you have really strong reasons to go one way or the other, then obviously, that might be what you’d want to watch out for. On the other hand, if you’re like ‘well, I don’t care either way’, then I would just keep in within the same site.
You can watch the video here:
Optimize your pages to get high rankings
It doesn’t matter if you use subdomains or subdirectories. You must make sure that Google finds your web pages relevant if you want to get high rankings. The tools in SEOprofiler can help you to do that. You can create your SEOprofiler account here: