Never seen the term used before, but pretty sure it means Business to Business to Consumer i.e. they are a business that sells consumer facing software to other

Never seen the term used before, but pretty sure it means Business to Business to Consumer i.e. they are a business that sells consumer facing software to other businesses. Example would be a POS (Point of Sale) system which I am guessing based on above anecdote is the family of software grandparent was referring to.