Slack is a messaging platform for teams. Conversation lives in channels you can organise by team, account, deal or project, alongside direct messages, huddles and threads. Its core job is to give a company one searchable place to talk, instead of email chains nobody outside the thread can ever find again. For GTM teams the useful part sits under the chat. Apps connect Slack to your CRM and data tools. Incoming webhooks let any system post a message. Workflow Builder adds forms, buttons and approval steps, so a message can carry an action and not only information. In a stack, Slack is the human layer. Clay, n8n, HubSpot and the rest do the research, the scoring and the routing. Slack is where that finished work reaches a person who has to decide something: an alert, an approval, a handoff, the quick yes that pushes a lead onward. That is how we use it. Slack is the human layer of the systems we build, where our workflows surface alerts, enriched context, approval requests and handoffs so a rep can act inside the hour. A channel by itself is not alignment. It only works when the message arrives with the context and the next action already attached.