Tier 0 Tier 1 Tier 2 Strategy
Parent: MongoDB Atlas Cost Optimization · Published reference · snapshot 2026-10-15
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Measurements and reference values
- [high] Tier 0 strategy targets highest criticality applications requiring fully-automated failover during regional outages, demanding SLOs above 99.99% with RTO in seconds and RPO approaching zero. Sources: https://www.mongodb.com/docs/atlas/architecture/current/deployment-paradigms.md, https://learn.microsoft.com/en-us/azure/well-architected/design-guides/disaster-recovery [source]
- [high] Tier 2 strategy targets lowest criticality applications that can be down for 24 hours without significant revenue impact, with an RTO above 8 hours (Atlas deployment paradigms); Azure's comparable Business Operational tier targets SLOs around 99.9% with RTO and RPO in hours, while SLOs below 99.9% and RTO of hours to days describe Azure's Tier 3 (Administrative). Sources: https://www.mongodb.com/docs/atlas/architecture/current/deployment-paradigms.md, https://learn.microsoft.com/en-us/azure/well-architected/design-guides/disaster-recovery [source]
Facts and statements
- [low] Tier 2 (Business Operational) optimizes costs by using cold standby setups and pay-as-you-go options like spot instances and consumption pricing. Sources: https://learn.microsoft.com/en-us/azure/well-architected/design-guides/disaster-recovery [source]
- [low] Tier 3 (Administrative) prioritizes cost savings by relying on backup and archival storage with longer recovery windows. Sources: https://learn.microsoft.com/en-us/azure/well-architected/design-guides/disaster-recovery [source]
Related concepts
- Tier — is a part of Tier 0 Tier 1 Tier 2 Strategy
- Strategy — is a part of Tier 0 Tier 1 Tier 2 Strategy
Children
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