Online education provides unprecedented opportunities for students who might not otherwise have access to continuing education. But, while it continues to grow and evolve, online students often report feeling isolated and disengaged, lacking in a student community or cohort. One tool, in use by companies like eBay, Foursquare, Samsung, and Electronic Arts, addresses this problem. By creating a dedicated social space that integrates with existing services, content is kept timely, relevant, and participants remain actively engaged. Deployed in the online classroom, it provides students with a much-needed sense of community and engagement while also preparing them for the career environment of tomorrow. That tool? Slack.