Blogging is the way businesses communicate with their established and prospective customers today. Blog websites are mostly blogs with fresh articles added regularly so that they are never out of date. The reason blogging works is that there are potential customers searching for companies to do business with.
When you publish enough knowledgable articles, search engines will tend to show them in their results pages for people to read them.
They can also find them through social media, when your business followers post them there.
And because your business owns the blog, you can look through reports to learn which sorts of articles people tend to read the most. By writing more of those kinds of articles, more people will tend to read your business blog, taking them one step closer to becoming customers.