Understand your customers

“The purpose of any business is to get and keep a customer. Without customers, no amount of engineering wizardry, clever financing, or operations expertise can keep a company going” – Theodore Levitt

Simply put, focus on market pull and not technology push. You need to show how to acquire new customers and what problem of theirs is your product or solution solving, that simple. Understand customers first and what they want and when, and deliver it to high quality.