Data analytics company Datadog went public on Thursday, and its stock rose 39% in the first day of trading. DataDog was last valued privately at $7.83 billion, but should see a richer valuation than that when the markets open on Friday. Datadog co-founder and CEO Olivier Pomel says that hiring is the company's top priority with the IPO out of the way. He also said that DataDog's roadshow took an unusual turn: The company interviewed potential investors to make sure they understood what they were getting themselves into.