1. What do you do?
2. What problem do you solve?
3. How is your product or service different?
4. Why should I care?
Describe your product or service in 140 characters or less, short enough for a tweet. Business professionals who stand out are the ones who deliver their pitch in less than a minute, but still make their points quite persuasively.
But it is not all about speed or brevity as the infographic below details quite nicely.