Slack Review

Slack is the core, consistent messaging program my organization uses on a daily basis as a global company. We also have larger channels for general communication from the company, whether that is leadership giving updates or congratulations, or places for individual workers to address concerns, as well as smaller channels for individual teams so we don't have to track email threads to each other.
We also have a number of integrations, and when asked to remove Slack for budgetary reasons, the integrations we have in place kept us from switching to more cost effective methods, just because the level of friction it would take to implement work-arounds and alternative methods of tracking different things were determined to be too many/difficult. We have integrations to our outage systems so people can receive the notifications via Slack, we have multiple customer feedback channels that pull from our NPS and website feedback so we don't have to worry about finding that feedback and collating it manually, its all just published right into a channel. This means we can respond within minutes to negative or confused feedback, to say nothing of easily creating engineering tickets from individual messages and working on fixes with very little friction to reporting.