Your call cannot be completed as dialed... TurboTax + Twilio, an April 15th tax deadline love story

Every year the customer success team at Intuit's TurboTax solves millions of phone support and tax advice cases over the phone. With a distributed, work-from-home army of thousands of experts ready to support customers, our phone system is the backbone for connecting people in need. This is a story of how Twilio checks the quality, uptime, and availability of a massive distributed call center.
Girish Mallenahally, Kat Meyer, Michael Moore