What is Slack?
Slack is a cloud-based team communication platform built around channels — dedicated spaces for topics, projects, or teams. Instead of hunting through email threads, conversations live in searchable channels that anyone with access can read and contribute to. Owned by Salesforce since 2021, Slack has grown from a messaging app into a broader work coordination hub, adding AI summaries, no-code automation, and deep integrations with tools like Jira, Google Drive, Salesforce, and GitHub.
Core Features
- Channels and Threads: Organise conversations by project, team, or topic. Threads keep side discussions from cluttering the main channel.
- Huddles: Instant voice or video calls launched directly inside a channel or DM. No meeting link needed. Supports up to 50 participants on paid plans.
- Slack Connect: Invite external partners, vendors, or clients into shared channels without them needing a separate workspace. Useful for agency-client collaboration.
- Clips: Record short audio or video messages and drop them into a channel. Good for async updates when you do not want to type a long message.
- Canvas: A persistent document space inside each channel. Use it for meeting notes, SOPs, or project briefs — available on all plans including Free.
- Workflow Builder: No-code automation tool for building repeatable processes — onboarding flows, approval requests, standup prompts — without writing code.
- Slack AI: Channel and thread summaries, daily recaps, huddle notes, and AI-powered search across apps. Basic AI is on Pro; advanced AI ships with Business+.
- App Integrations: Over 2,600 integrations in the App Directory covering project management, DevOps, CRM, HR, and more.
How Remote Teams Use Slack
Remote teams use Slack as the default layer for day-to-day communication — replacing email for internal updates, running async standups in dedicated channels, and using Huddles for quick syncs instead of scheduling formal Zoom calls. The channel structure works well across time zones: a teammate in Kuala Lumpur can post an update, and a colleague in Manila picks it up when they start their shift. Status indicators and Do Not Disturb settings let people signal availability without constant interruption. Notification management takes discipline — left unconfigured, Slack can become a source of constant distraction — but teams that set clear channel norms and use threads consistently get strong async workflows out of it.
Who Gets the Most Out of Slack
Slack fits best with tech-forward, async-first teams who already use a stack of SaaS tools. If your team lives in Jira, Notion, GitHub, or Salesforce, Slack becomes the connective tissue. It is particularly strong for software development teams, product teams, agencies managing multiple client projects via Slack Connect, and distributed teams that span multiple time zones. Smaller teams on tight budgets will find the free plan limiting — the 90-day message history cut-off is a real operational constraint. If your org is already deep in Microsoft 365, Teams is often the more cost-effective choice. But if you are not locked into Microsoft, Slack consistently wins on interface, integrations, and async usability.