Twilio (NYSE: TWLO) took investors on a gut-churning ride this year, surging from its IPO price of $15 in June to almost $70 before plummeting back to the low $30s. Interest in the cloud platform provider initially surged on its “best in breed” reputation for linking popular apps like Facebook (NASDAQ: FB) Messenger, WhatsApp, and Uber to users’ phone numbers and SMS messages.