The best free option I've found is to run Ghost, Buster, and Github-pages. http://talalanwar.com/host-a-ghost-blog-for-free/ http://talalanwar.com/host-a-ghost

The best free option I've found is to run Ghost, Buster, and Github-pages. http://talalanwar.com/host-a-ghost-blog-for-free/ http://talalanwar.com/host-a-ghost-blog-for-free/ You said it's for your company so I would run your own Ghost instance on the companies subdomain and be done with it. Medium can be great for exposure but ultimately your posts will be more valuable on your own domain.