PagerDuty vs Slack

PagerDuty and Slack aren't direct competitors, but small teams often compare them when deciding how to handle incident alerts and team communication without paying for two tools. Here's what each actually does, where they overlap, and what you give up if you try to consolidate.

Updated 2026-09 · 2026

PagerDuty

Incident response and on-call alerting for engineering and ops teams

$21per user/month (Starter plan, billed annually)

Strengths

+On-call scheduling with automatic rotation and escalation policies
+Deep native integrations with monitoring tools (Datadog, New Relic, AWS CloudWatch)
+Multi-channel alerting: phone call, SMS, push, and email with acknowledgment tracking

Weaknesses

-Per-seat pricing scales fast for larger on-call rotations
-Escalation policies and schedules take real setup time to configure correctly
-Not a communication tool - no persistent chat or channels

Best for

Engineering and DevOps teams that need reliable on-call alerting and incident escalation, not day-to-day chat.

Slack

Team messaging and channels for daily collaboration

$7.25per user/month (Pro plan, billed annually)

Strengths

+Persistent channels for team, project, and incident communication
+Huge app and integration ecosystem (2,600+ apps in the directory)
+Free tier usable indefinitely for small teams

Weaknesses

-No built-in on-call scheduling or escalation policies
-Free plan only retains 90 days of message history
-Notifications can be muted or missed - not reliable for waking someone up during an outage

Best for

Teams that need a central communication hub with channels, DMs, and integrations for daily collaboration.

Feature Comparison

Feature	PagerDuty	Slack
On-call scheduling	Yes, built-in rotations	No native feature
Escalation policies	Yes, multi-level with timeouts	No
Team chat / channels	No	Yes, core feature
Phone call / SMS alerting	Yes, with acknowledgment tracking	No (push notifications only)
Monitoring tool integrations	700+ native integrations	Via webhooks and third-party apps
Free tier limits	Up to 5 users, basic alerting	Unlimited users, 90-day message history
Status pages	Yes (PagerDuty Status Pages)	No
Postmortem / incident reports	Yes, built-in	No, manual
Video / voice calls	No	Yes, Huddles
Search & file sharing	Limited to incident context	Full search, ample storage on paid plans
Reliability for waking someone up at 3am	High (push + call + SMS + ack)	Low (push notifications only)
Starting paid price	$21/user/month	$7.25/user/month

The Verdict

These tools solve different problems: PagerDuty decides who gets paged when something breaks, Slack is where the team talks about it. Don't replace PagerDuty with Slack for on-call - you'll lose escalation policies and reliable paging, which matters the moment an alert gets missed at 3am. Only drop PagerDuty if your team genuinely doesn't need 24/7 incident response; otherwise run both together, with PagerDuty alerts routed into a Slack channel.

How to switch from PagerDuty to Slack

1Export your incident history, schedules, and escalation policies from PagerDuty: use Incidents > Export for a CSV of incident logs, and pull schedule/escalation policy configs via the PagerDuty REST API as JSON, since there's no built-in bulk export UI for those.
2Set up Slack channels that mirror your incident workflow (e.g., #incidents, #on-call, #postmortems) so the team has a coordination hub once alerting logic moves.
3Connect your monitoring tools (Datadog, CloudWatch, Sentry, etc.) directly to Slack via native integrations or incoming webhooks to replace the alerts PagerDuty used to route.
4If you still need real on-call paging, keep PagerDuty (or migrate to a cheaper alternative like Better Stack or Opsgenie) and route those alerts into your new Slack channels using PagerDuty's Slack integration.
5Recreate documented runbooks or escalation steps as pinned messages or Slack Workflow Builder automations so responders know what to do without PagerDuty's built-in logic.
6Run both systems in parallel for 2-4 weeks, then cancel PagerDuty seats for anyone who no longer needs paging once you've confirmed critical alerts are reliably reaching on-call staff another way.

PagerDuty vs Slack: common questions

How do I export my incident history and schedules out of PagerDuty?+

PagerDuty lets you export incident logs as CSV from the Incidents dashboard. Schedules and escalation policies don't have a one-click export, so most teams pull that config via the REST API (GET /schedules, /escalation_policies) as JSON before cancelling their account.

What do we lose if we replace PagerDuty with Slack for incident alerts?+

You lose automatic escalation policies, on-call rotations, and phone/SMS paging with acknowledgment tracking. Slack notifications can be missed if someone's phone is on silent or the app is closed, which is a real risk during a critical outage.

Is Slack's free plan enough for a small team's incident communication?+

It's fine for basic chat, but the free plan only retains 90 days of message history and search, per Slack's current policy. For incident postmortems that need full historical context, you'll likely need Slack Pro at $7.25/user/month.

Does Slack integrate with monitoring tools the way PagerDuty does?+

Slack doesn't monitor systems itself, but tools like Datadog, Grafana, and AWS CloudWatch can post alerts into a Slack channel via webhook or native app. This replicates notification but not escalation, acknowledgment, or automatic paging.

Will switching from PagerDuty to Slack actually save money long-term?+

Yes, if you fully drop dedicated incident management - Slack Pro at $7.25/user/month is roughly a third of PagerDuty's Starter tier at $21/user/month. But if you still need real on-call alerting, you'll likely keep PagerDuty (or switch to a cheaper alternative like Better Stack or Opsgenie) and pay for both.