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Azure Prepare

Prepare Azure environments for new workloads—subscriptions, networking, identity, and landing zones

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SKILL.md

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references/services/cosmos-db/README.md

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Azure Cosmos DB

Globally distributed, multi-model database for low-latency data at scale.

When to Use

Global distribution requirements
Multi-model data (document, graph, key-value)
Variable and unpredictable throughput
Low-latency reads/writes at scale
Flexible schema requirements

Required Supporting Resources

Resource	Purpose
None required	Cosmos DB is fully managed
Key Vault	Store connection strings (recommended)

Capacity Modes

Mode	Use Case	Billing
Serverless	Variable/low traffic, dev/test	Per request
Provisioned	Predictable workloads	Per RU/s
Autoscale	Variable but predictable peaks	Per max RU/s

Consistency Levels

Level	Latency	Consistency
Strong	Highest	Linearizable
Bounded Staleness	High	Bounded
Session	Medium	Session-scoped
Consistent Prefix	Low	Prefix ordering
Eventual	Lowest	Eventually consistent

Recommendation: Use Session for most applications.

Environment Variables

Variable	Value
`COSMOS_CONNECTION_STRING`	Primary connection string (Key Vault reference)
`COSMOS_ENDPOINT`	Account endpoint URL
`COSMOS_DATABASE`	Database name

References