What does "hot shot" mean.
I found this phrase in the following sentence.

He relayed the tale at Boston's third annual Big Data Summit, an event sponsored by the Massachusetts Technology Leadership Council (MassTLC) that featured big data hot shots from Xerox, Zipcar and Optum Labs.

Question

What does "hot shot" mean.
I found this phrase in the following sentence.

He relayed the tale at Boston's third annual Big Data Summit, an event sponsored by the Massachusetts Technology Leadership Council (MassTLC) that featured big data hot shots from Xerox, Zipcar and Optum Labs.

Answer

"Hot shots" can mean high achievers, for example people who are very successful in their job.