Slack is a work operating system that integrates people, projects, tools, and AI. Its unique approach combines collaboration and project management in a single platform, enhancing productivity and communication. This integration allows teams to work more efficiently and effectively, transforming how they manage tasks and projects.
Organize team communication through channels; Collaborate with external partners using Slack Connect; Conduct audio and video meetings with Huddles; Automate tasks with Workflow Builder; Utilize AI for efficient information retrieval.
Used by 80% of Fortune 100 companies; 700 million messages sent daily; 14 million Slack Connect users collaborating weekly.
Series H: $427M led by Dragoneer Investment Group and General Atlantic (October 2025)