Employee fitness challenges are by nature collaborative experiences and ChallengeRunner was designed with many collaboration features built-in such as messaging and chat. However, dedicated collaboration apps such as Slack and Microsoft Teams can simplify challenge management, provide additional feedback, and enhance participation. In addition, embedding ChallengeRunner within Slack or Teams provides the additional benefits of single sign on, automated leaderboard and event notifications, simplified registration, and cross-platform integration with either Teams or Slack desktop, website or mobile apps.