Our busy team members across all departments - including C-suite - like the ease of being informed instantly on the topics they care about with the Salesforce Troops channels we have in Slack. We are a Slack-heavy org, and it's the preferred communication tool, so they rely on it as an informative resource, and tag in others for comments and ideas as well.
Everyone really loves the Sales Wins channel to both be instantly informed, and to celebrate or laugh at the gifs.
Our only issue has been some combinations of fields and triggers can limit some ability to customize your message or alert fully, or don't include a link to the record in Salesforce.
Although it has good technology to update CRM information in the channel that many people surely like, I prefer to keep everyone working in Salesforce as much as possible so they continue to see that as the key location for working updates.
Make sure you decide how you want your teams to work in Slack before implementing editable fields, etc.
We have seen great involvement in tracking and discussing both Wins and Loses. Sales has really enjoyed the ease of reviewing and assigning or taking new Inbound Leads that come in through our various channels. It's easiest to see here in the channel, and let everyone discuss there who should take next steps.
We also use email templates and status change next steps requirements heavily as a solution to keep things moving efficiently and correctly. It's been a great auditing tool for the cross-departmental teams to ensure Sales is managing appropriately at each stage.
It's also been key in making sure I can see the progress of specific changes that are harder to track in Salesforce itself, like opportunity name changes and close date/value changes that affect reporting. It's easier to see all that in one channel than to pull reports with lots of filters as needed.