Minor usability suggestion that literally no one will likely care about but I notice it all the time:

If you're writing a blog post about your service then chances are you're interested in driving people to the main website about that service?

So...make it easy for those potential users to get there. At the top of your blog have a prominent "what is [service]" link to the marketing home / about page or a call out box.

This guy does it as a CTA after the post which is a start but many, many people don't. That then leaves me and other potential users to have to figure out how to get to the homepage. I'll do it but you'll lose many others.