A communication platform can leverage a network-based computing system to enable applications to exchange data with one or more applications via channels. In some examples, a first application may post messages to the channel and a second application may listen to the posted messages to identify an event based on one or more of the messages. Responsive to detecting an event, the second application may notify a user, create a new channel, add a user to a channel, or the like, and/or the second application may take an action to remediate an issue. The first application and the second application and users added to the channel may be associated with a same or different organizations.