The Twilio Conference Day 2 has begun at the Bently Reserve in San Francisco. The event features keynotes from prominent speakers such as Oren Jacob, former Pixar CTO, and Adrian McDermott from Zendesk. Additionally, there are numerous sessions covering various topics including building startups with Twilio, distributed systems, productizing applications, and more. The conference also includes panels on call tracking and customer-focused backend billing systems. Although some attendees may not be able to join in person, the entire event is being recorded for later viewing.