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CloudScale Systems

How CloudScale Systems cut critical incident war room assembly time by 80%

CloudScale Systems provides high-throughput distributed database infrastructure for global e-commerce and fintech platforms processing billions in daily transactions.

Industry
Enterprise Technology
Team
1,200 employees (60 site reliability engineers)
Based in
San Francisco, CA & Dublin, Ireland
Rolled out in
3 weeks
Incident war room assembly time
-80%Multi-engineer bridge dispatch dropped from 45 minutes to 9 minutes during outages
  • -80%Faster war room dispatchFrom P1 pager alert to all necessary infrastructure leads connected on live bridge
  • 60SREs on rotating on-callShift-aware availability verified in real-time across US and European timezones
  • 100%SLA compliance uptimeEliminated missed triage handoffs across critical database and networking tiers
01

The scheduling problem at CloudScale Systems

During critical platform incidents, incident commanders had to manually page specialists, check rotating on-call calendars in PagerDuty and Google Workspace, and arrange joint triage calls across engineers in North America and Europe.

  • 45-minute average delay assembling complete cross-functional engineering teams for P1 outages
  • Discrepancies between calendar availability and actual on-call shift rotations
  • Lack of audit logging on who joined incident briefings and when handoffs occurred
Compared against: H1 2025 Incident Post-Mortem Reviews
02

What CloudScale Systems set up in Caletus

CloudScale integrated Caletus collective scheduling and webhooks into its incident response automation, enabling instant multi-host triage booking based on live on-call schedules.

  • Collective multi-host scheduling
  • Google Workspace multi-calendar sync
  • Real-time timezone conversion
  • PagerDuty and Slack webhook integrations
Rollout
  1. Week 1
  2. Week 2
  3. Week 3 · live
When an escalated alert is triggered, a Caletus collective link instantly checks current on-call schedules across all relevant infrastructure pillars and sends instant bridge invitations to verified available leads.
03

The results at CloudScale Systems

Average time to full incident response team assembly fell from 45 minutes to 9 minutes, saving an estimated $2.4M in downtime penalties.

  • Mean time to assemble incident bridgeHow: Jira Service Management incident timestamp logsDropped from 44.8 minutes to 8.6 minutes
  • Post-incident customer SLA complianceHow: Enterprise SLA customer penalty auditsZero SLA breach penalties incurred over 12 consecutive months
  • Engineer on-call satisfactionHow: Quarterly SRE internal pulse surveyPositive rating of incident handoff coordination rose from 52% to 94%
When an enterprise P1 incident strikes at 2 AM, you cannot have incident commanders searching calendars for who is on call across database, network, and application teams. Caletus collective links connect all required leads in minutes.
Tariq Al-MansoorTariq Al-MansoorVP of Infrastructure, CloudScale Systems
If you remember three things

What other teams can learn from CloudScale Systems

  1. Emergency response requires collective scheduling that accounts for multi-timezone shift rotations automatically.
  2. Direct webhook integration with incident management tools eliminates human delay in war room dispatch.
  3. Accurate multi-calendar sync prevents paging engineers who are already handling active outages.

The Caletus features CloudScale Systems used

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