The inaugural SIGNAL conference featured talks from industry leaders and product announcements from Twilio, covering topics such as building iOS apps, fighting homelessness with SMS, and the future of software communications. The conference was divided into four tracks: Equip, Insight, Impact, and Learn, each focusing on different aspects of business success and technical expertise. Keynotes were also held, including an unveiling of new Twilio products like IP Messaging and Video SDKs.