Resource: https://slack.com/blog/news/salesforce-signs-definitive-agreement-to-acquire-slack
Slack App Directory - https://slack.com/apps
Get Started with Slack Trailhead Trail https://trailhead.salesforce.com/en/content/learn/trails/be-more-productive-with-slack -
Integrate Salesforce with Slack Trailhead Project https://trailhead.salesforce.com/content/learn/projects/integrate-sale...