9
Only
Nines
Methodology
GitHub
Assess my environment
// calculator
Build a stack. Count the nines.
Serial composition — every component is a hard dependency (worst case, on purpose).
COMPOSITE SLA
99.900
%
≈ 8.8 h/yr downtime budget · 3.0 nines
9
99
99.9
99.99
99.999
Your stack
1 component(s)
Azure AI Search
Azure Kubernetes Service
App Service app / Function App (site)
Azure App Service
Azure Application Gateway (v2)
Azure Bot Service
Azure AI Services (Cognitive Services / OpenAI)
Azure Container Apps Agents
Azure Container Apps Environment
Azure Container Apps Jobs
Azure Container Apps
Azure Container Registry
Azure Data Factory
Azure Front Door
Azure Key Vault
Azure Load Balancer (Standard)
Azure Monitor metric alert
Application Insights web test
Azure Database for MySQL Flexible Server
Azure Network Watcher
Azure Database for PostgreSQL Flexible Server
Azure Cache for Redis
Azure Service Bus
Azure SQL Database
Azure SQL logical server
Azure Storage Account
Azure Virtual Machines
standard — 99.90%
✕
+ Add component
ⓘ
Designed availability, not a guarantee.