RESTfest 2011 was a conference focused on REST-based systems where attendees traded ideas, problems, stories, and code in an almost all practical setting. The event featured regular presentations, demos, and a unique format where every attendee had to give a "5 in 5" presentation showcasing something they'd built or a concept they're working on. The conference was 100% free to watch online, with recorded sessions posted weekly for learning about REST, building powerful software, and staying up-to-date on the technology's future direction.