After looking at a lot—over two hundred—LinkedIn personal profile pages, I have found the gold standard for doing a LinkedIn bio. There are only a few sections, but each are specific to the buyer persona you have chosen to appeal to.

Product/market fit is not a one-size-fits-all process, nor is it a one-time event. It is an iterative process that demands the continual collaboration between the product, marketing, sales, services, and leadership teams of a company.  

We can simplify product/market fit to mean the following: the degree to which the product being sold satisfies market demand and customer needs.