Always, focus on solutions. This is what customers are really looking for. The key here is to give your target market something that interests them.
To talk of a design without understanding the business model that drives it is to critique an artwork without knowing the artist. Design always starts with a well-planned business model.
Portfolio (n.) : Portafoglio "a case for carrying loose papers," Italian portafoglio, from portare to carry (from Latin) + foglio leaf, sheet, from Latin folium — first known use: 1722