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PagerDuty is an incident-response and paging specialist with best-in-class rotations and a rich ecosystem. Greenslope is Auto-SRE: we detect, triage, and close the loop. These are complementary more often than competitive.
This page is a positioning narrative, not a feature matrix. It should help you self-select — the right customers pick Greenslope, the right customers pick PagerDuty, both leave respecting the other.
PagerDuty, on its own terms.
PagerDuty is the category-defining paging platform. Rotation scheduling, escalation policies, acknowledgement tracking, deep integrations with just about every monitoring vendor, and a mature incident-response suite. If you already page someone today, odds are it’s through PagerDuty.
When we'd tell you to pick PagerDuty.
We'd rather you pick the right tool and trust us than adopt Greenslope for a job it isn't the right shape for.
- You already have on-call rotations, escalation policies, and runbook practice you want to keep.
- Rotation scheduling is non-negotiable — multiple shifts, handoffs, follow-the-sun, complex escalation trees.
- You want mobile push notifications today, driven by a mature native app.
- You want PagerDuty's incident-response suite (stakeholder comms, status page, postmortems) as your system of record.
- Integration breadth is a hard requirement — you need to ingest events from many vendors.
When Greenslope is the better shape of tool.
Greenslope is Auto-SRE for small, shipping-fast engineering teams. If this is you, keep reading.
- You're a small team without formal rotations yet. A couple of engineers take alerts on Slack, SMS, or voice; you don't need a scheduling product.
- You want the alert to arrive with a triage summary and a rollback suggestion, not just a page.
- The closed loop — detect, triage, suggest rollback, draft postmortem — is what you're buying, and paging is the last mile.
- Your team would rather take alerts in Slack than install a second app.
- SMS and voice via Twilio cover your on-call needs at V1.
Non-goals — on purpose.
Every product is a set of choices. Here's what we've deliberately decided not to compete on.
On-call rotation scheduling
V1 Greenslope does not ship rotations. SMS and voice via Twilio are per-recipient on the alert rule. Rotation scheduling is V2+.
Mobile push
PagerDuty has a mature mobile app with push. Greenslope ships SMS and voice via Twilio at V1. Native push requires a mobile app; that's V2+ for us.
Escalation policies
Multi-tier escalation with time-based handoffs is what PagerDuty was built for. We don't try to replicate it — if you need it, use PagerDuty.
Stakeholder communications
Customer-comms-during-incidents, status pages driven by PagerDuty, incident commander rituals — PagerDuty owns that workflow. Greenslope focuses on triage and postmortem.
They aren't always either/or.
This is the most common pattern. Greenslope detects, triages, and closes the loop on the observability side; PagerDuty handles the rotation and escalation side. We integrate as a send-events-in source via webhook.
Small teams usually start with Greenslope + Slack + Twilio and graduate to PagerDuty when rotations outgrow an ad-hoc on-call. When they do, the Greenslope → PagerDuty webhook stays intact. We keep working as the triage and postmortem layer; PagerDuty runs the paging.
Next step
Try Greenslope free for 14 days. No credit card. You’ll see your first trace within five minutes of finishing setup.