What is Slack?
Slack organizes conversations into channels that can be scoped to a team, project, or topic, alongside direct messages and threaded replies. Huddles provide lightweight audio and video calls without leaving a channel, and Workflow Builder lets teams automate routine steps like approvals or status updates without writing code. The Slack App Directory and Slack API connect the platform to third-party tools.
Read the full overview
Sources checked 27 September 2026: Slack features overview and Slack pricing.
SlackCollaboration & CommunicationChannel-based team messaging with huddles and workflow automation
Key capabilities
- Channels: public or private spaces for team and topic-based conversation.
- Huddles: quick audio/video calls started from a channel or DM.
- Workflow Builder: no-code automation for repeatable processes.
- App integrations: connections to external tools through the Slack API and App Directory.
Slack can reduce internal email volume by giving teams a searchable, channel-based record of decisions and files. Slack has been owned by Salesforce since 2021. Buyers should verify current integration depth, retention, and compliance features directly against Slack's own plan documentation, checked 27 September 2026 at slack.com/pricing, rather than general marketing claims.
“Channel-based team messaging with huddles and workflow automation”
Technical details
- Access
- Web platform
- Source model
- Commercial
- Founded
- 2013
- Pricing model
- Freemium
- API
- Available
- Website
- slack.com ↗
What to verify
Start from the users, systems and operating responsibilities the tool needs to support.
- Confirm current features, licensing and support terms.
- Validate deployment, data location and access control.
- Test integrations, exports and recovery workflows.
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