Serious question, what does Twilio need to go public for? They have a solid business model, with huge companies using them. Is this just so venture capitalists can get paid out? Edit: I guess this has been asked, and answered in the previous thread.
One of the few companies that can benefit in a non-financial way. For a core service like telecom, the scrutiny in being public is comforting to prospective enterprise customers. Company is almost 10 years old so pretty reasonable, if late, timing.
The money is nice, especially for early employees. It also helps close more big deals, large enterprises like working with public companies because they're not going to go anywhere quickly.