The TwilioCon Hackathon is an annual event where developers can showcase their skills by building innovative applications using Twilio's services. The hackathon will take place on October 17th at the SF Concourse Exhibition Center, with a schedule that includes sponsor demos, hacking sessions, and demo presentations. A panel of judges, including Jeff Lawson, Craig Kitterman, and Patrick McKenzie, will evaluate the hacks based on creativity, originality, and technical merit, with prizes ranging from gadgets to cloud services and credits. The grand prize winners will receive a package worth over $1,000, while runner-up teams will receive smaller prizes and recognition as part of Twilio's developer community.