Twilio's SIGNAL London 2017 conference was a success with over 600 attendees and 23 sessions, including the announcement of new tools such as Twilio Studio for building engagement solutions, Global Phone Numbers Catalog for finding tailored phone numbers, and Twilio Understand for improving customer experience through faster and more accurate interactions. The conference also featured breakout sessions on topics like GDPR and its impact on businesses, as well as a presentation by Age UK showcasing how technology helps combat loneliness among older people. The event was marked by thunderous applause and excitement from developers and attendees alike, with many praising Twilio's efforts to simplify the lives of developers through new tools and features.