Azure Cosmos DB Skill

This skill provides expert guidance for Azure Cosmos DB. Covers troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, integrations & coding patterns, and deployment. It combines local quick-reference content with remote documentation fetching capabilities.

How to Use This Skill

IMPORTANT for Agent: Use the Category Index below to locate relevant sections. For categories with line ranges (e.g., L35-L120), use read_file with the specified lines. For categories with file links (e.g., [security.md](security.md)), use read_file on the linked reference file

IMPORTANT for Agent: If metadata.generated_at is more than 3 months old, suggest the user pull the latest version from the repository. If mcp_microsoftdocs tools are not available, suggest the user install it: Installation Guide

This skill requires network access to fetch documentation content:

• Preferred: Use mcp_microsoftdocs:microsoft_docs_fetch with query string from=learn-agent-skill. Returns Markdown.
• Fallback: Use fetch_webpage with query string from=learn-agent-skill&accept=text/markdown. Returns Markdown.

Category Index

Category	Lines	Description
Troubleshooting	L37-L87	Diagnosing and fixing Cosmos DB issues across APIs and SDKs: connection and timeout errors, RU/latency problems, encryption/CMK and replication issues, and advanced diagnostics/log queries.
Best Practices	L88-L140	Performance, scaling, partitioning, RU/cost optimization, SDK usage, change feed, resilience/DR, and best practices for Cosmos DB APIs (NoSQL, MongoDB, Cassandra, PostgreSQL, vector).
Decision Making	L141-L191	Guides for choosing Cosmos DB deployment, scaling, consistency, backup, pricing, and migration options across SQL, MongoDB, Cassandra, Table, and PostgreSQL APIs.
Architecture & Design Patterns	L192-L217	Patterns and reference architectures for AI agents, change feed, analytics, multi-region HA, SaaS/multi-tenant design, microservices, and vector/AI search on Cosmos DB and Cosmos DB for PostgreSQL.
Limits & Quotas	L218-L252	Limits, quotas, and behaviors for Cosmos DB throughput, partitions, backup/restore, serverless, APIs (Cassandra, Gremlin, Table), integrated cache, and PostgreSQL clusters.
Security	L253-L318	Securing Cosmos DB: encryption, keys, RBAC/Entra ID, network isolation (VNet, Private Link, firewalls), auditing, data masking, TLS, and security best practices across all APIs.
Configuration	L319-L444	Configuring Cosmos DB and its APIs: throughput, indexing, TTL, backup/restore, fleets, monitoring/logging, SDK tuning, emulators, Mongo/Cassandra/PostgreSQL features, HA, and performance settings.
Integrations & Coding Patterns	L445-L566	SDK usage, bulk import, change feed, vector search, Kafka/Spark/PostgreSQL/Mongo/Cassandra/Gremlin integrations, migration tools, and sample code for app and data connectivity.
Deployment	L567-L592	Deploying and migrating Cosmos DB (NoSQL, MongoDB, Cassandra, PostgreSQL, Table) using Bicep, ARM, Terraform, CI/CD, emulator, AKS, and handling upgrades, restores, and maintenance.

Troubleshooting

Topic	URL
Run advanced diagnostics queries for Cosmos DB Cassandra	https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/diagnostic-queries
Use Log Analytics for Cosmos DB Cassandra error codes	https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/error-codes-solution
Resolve issues with Cassandra materialized views in Azure Cosmos DB	https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/materialized-views-faq
Resolve common Cosmos DB Cassandra API errors	https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/troubleshoot-common-issues
Fix NoHostAvailable and NoNodeAvailable in Cosmos DB Cassandra	https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/troubleshoot-nohostavailable-exception
Troubleshoot revoked-state Cosmos DB CMK accounts	https://learn.microsoft.com/en-us/azure/cosmos-db/cmk-troubleshooting-guide
Troubleshoot Cosmos DB with advanced diagnostics log queries	https://learn.microsoft.com/en-us/azure/cosmos-db/diagnostic-queries
Run advanced diagnostics queries for Cosmos DB Gremlin	https://learn.microsoft.com/en-us/azure/cosmos-db/gremlin/diagnostic-queries
Troubleshoot common questions for Azure Cosmos DB Gremlin API	https://learn.microsoft.com/en-us/azure/cosmos-db/gremlin/faq
Interpret Cosmos DB Gremlin response headers for debugging	https://learn.microsoft.com/en-us/azure/cosmos-db/gremlin/headers
Use diagnostics queries to troubleshoot Cosmos DB MongoDB	https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/diagnostic-queries
Resolve common Azure Cosmos DB MongoDB error codes	https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/error-codes-solutions
Resolve common issues for Azure Cosmos DB MongoDB API	https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/faq
Prevent rate-limiting errors in Cosmos DB MongoDB operations	https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/prevent-rate-limiting-errors
Troubleshoot query performance issues in Cosmos DB MongoDB	https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/troubleshoot-query-performance
Use aggregated diagnostics logs to troubleshoot Cosmos DB requests	https://learn.microsoft.com/en-us/azure/cosmos-db/monitor-aggregated-logs
Troubleshoot Cosmos DB with basic diagnostics KQL queries	https://learn.microsoft.com/en-us/azure/cosmos-db/monitor-logs-basic-queries
Monitor normalized request units to diagnose Cosmos DB load	https://learn.microsoft.com/en-us/azure/cosmos-db/monitor-normalized-request-units
Analyze Cosmos DB request unit usage for operations	https://learn.microsoft.com/en-us/azure/cosmos-db/monitor-request-unit-usage
Monitor and troubleshoot Cosmos DB server-side latency	https://learn.microsoft.com/en-us/azure/cosmos-db/monitor-server-side-latency
Troubleshoot connection issues to Azure Cosmos DB for PostgreSQL	https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-troubleshoot-common-connection-issues
Diagnose and fix read-only Azure Cosmos DB for PostgreSQL clusters	https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-troubleshoot-read-only
Run useful diagnostic queries on Cosmos DB for PostgreSQL clusters	https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-useful-diagnostic-queries
Troubleshoot Azure Cosmos DB Shell installation and usage issues	https://learn.microsoft.com/en-us/azure/cosmos-db/shell/troubleshooting
Use Azure SRE Agent to diagnose Cosmos DB issues	https://learn.microsoft.com/en-us/azure/cosmos-db/site-reliability-engineering-agent
Fix Cosmos DB 400 bad request and partition key errors	https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-bad-request
Troubleshoot Azure Functions trigger for Azure Cosmos DB	https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-changefeed-functions
Troubleshoot cross-tenant CMK issues in Cosmos DB	https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-cmk
Resolve Cosmos DB 409 conflict exceptions	https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-conflict
Troubleshoot Azure Cosmos DB .NET SDK issues	https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-dotnet-sdk
Resolve Cosmos DB .NET SDK request header too large (400) errors	https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-dotnet-sdk-request-header-too-large
Troubleshoot HTTP 408 timeouts in Cosmos DB .NET SDK	https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-dotnet-sdk-request-time-out
Diagnose and fix slow requests in Cosmos DB .NET SDK	https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-dotnet-sdk-slow-request
Troubleshoot Cosmos DB 403 forbidden exceptions	https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-forbidden
Diagnose and troubleshoot Cosmos DB Async Java SDK v2	https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-java-async-sdk
Troubleshoot HTTP 408 timeouts in Cosmos DB Java v4 SDK	https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-java-sdk-request-time-out
Fix service unavailable errors in Cosmos DB Java v4 SDK	https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-java-sdk-service-unavailable
Troubleshoot Azure Cosmos DB Java SDK v4 issues	https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-java-sdk-v4
Troubleshoot Cosmos DB 404 Not Found exceptions	https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-not-found
Diagnose and troubleshoot Cosmos DB Python SDK issues	https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-python-sdk
Troubleshoot Azure Cosmos DB SQL query performance issues	https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-query-performance
Troubleshoot Azure Cosmos DB 429 request rate errors	https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-request-rate-too-large
Resolve Azure Cosmos DB HTTP 408 request timeout errors	https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-request-time-out
Diagnose SDK availability and failover in multi-region Cosmos DB	https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-sdk-availability
Troubleshoot Cosmos DB service unavailable connectivity errors	https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-service-unavailable
Troubleshoot Cosmos DB 401 unauthorized access errors	https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-unauthorized
Use Cosmos DB metrics and insights to debug common issues	https://learn.microsoft.com/en-us/azure/cosmos-db/use-metrics

Best Practices

Topic	URL
Apply automated performance, cost, and security recommendations in Cosmos DB	https://learn.microsoft.com/en-us/azure/cosmos-db/automated-recommendations
Benchmark Cosmos DB for NoSQL with YCSB	https://learn.microsoft.com/en-us/azure/cosmos-db/benchmarking-framework
Follow best practices for Cosmos DB .NET SDK v3	https://learn.microsoft.com/en-us/azure/cosmos-db/best-practice-dotnet
Apply Java v4 Cosmos DB SDK best practices	https://learn.microsoft.com/en-us/azure/cosmos-db/best-practice-java
Optimize Azure Cosmos DB with Python SDK best practices	https://learn.microsoft.com/en-us/azure/cosmos-db/best-practice-python
Optimize Azure Cosmos DB with JavaScript SDK best practices	https://learn.microsoft.com/en-us/azure/cosmos-db/best-practices-javascript
Adapt Apache Cassandra apps to Cosmos DB Cassandra	https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/adoption
Consume change feed from Cosmos DB Cassandra	https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/change-feed
Map Cassandra consistency levels to Cosmos DB	https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/consistency-mapping
Apply recommended driver settings for Cosmos DB Cassandra	https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/driver-extensions
Measure RU charges for Cosmos DB Cassandra queries	https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/find-request-unit-charge
Use materialized views (preview) in Cosmos DB Cassandra	https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/materialized-views
Design partitions for Cosmos DB Cassandra workloads	https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/partitioning
Avoid rate limiting with server-side retry in Cosmos DB Cassandra	https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/prevent-rate-limiting-errors
Implement and consume Azure Cosmos DB change feed	https://learn.microsoft.com/en-us/azure/cosmos-db/change-feed
Design resilient Cosmos DB SDK client applications	https://learn.microsoft.com/en-us/azure/cosmos-db/conceptual-resilient-sdk-applications
Understand Cosmos DB conflict types and policies	https://learn.microsoft.com/en-us/azure/cosmos-db/conflict-resolution-policies
Choose IoT partition keys for Cosmos DB	https://learn.microsoft.com/en-us/azure/cosmos-db/design-partitioning-iot
Apply disaster recovery strategies for Azure Cosmos DB	https://learn.microsoft.com/en-us/azure/cosmos-db/disaster-recovery-guidance
Optimize vector indexing and search in Azure Cosmos DB	https://learn.microsoft.com/en-us/azure/cosmos-db/gen-ai/vector-search-performance-tips
Apply GitHub Copilot best practices for Azure Cosmos DB in VS Code	https://learn.microsoft.com/en-us/azure/cosmos-db/github-copilot-visual-studio-code-best-practices
Use hierarchical partition keys for scalable Cosmos DB data	https://learn.microsoft.com/en-us/azure/cosmos-db/hierarchical-partition-keys
Enable autoscale throughput for Cosmos DB resources	https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-provision-autoscale-throughput
Use shared database throughput safely in Cosmos DB	https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-provision-database-throughput
Monitor Azure Cosmos DB change feed processor progress	https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-use-change-feed-estimator
Model and partition real-world data in Cosmos DB	https://learn.microsoft.com/en-us/azure/cosmos-db/model-partition-example
Redistribute throughput across Cosmos DB MongoDB partitions	https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/distribute-throughput-across-partitions
Optimize Cosmos DB for MongoDB indexing configuration	https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/indexing
Optimize write performance for Cosmos DB MongoDB workloads	https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/optimize-write-performance
Optimize Azure Cosmos DB MongoDB workloads post-migration	https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/post-migration-optimization
Use MongoDB read preference with globally distributed Cosmos DB	https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/readpreference-global-distribution
Use MongoDB aggregation pipelines on Azure Cosmos DB	https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/tutorial-aggregation
Optimize Azure Cosmos DB costs for dev and production workloads	https://learn.microsoft.com/en-us/azure/cosmos-db/optimize-costs
Use Azure Cosmos DB partial document update effectively	https://learn.microsoft.com/en-us/azure/cosmos-db/partial-document-update-faq
Choose and manage partition keys in Azure Cosmos DB	https://learn.microsoft.com/en-us/azure/cosmos-db/partitioning
Optimize performance of Cosmos DB .NET SDK v2 clients	https://learn.microsoft.com/en-us/azure/cosmos-db/performance-tips
Optimize performance of Cosmos DB .NET SDK v3 clients	https://learn.microsoft.com/en-us/azure/cosmos-db/performance-tips-dotnet-sdk-v3
Apply Cosmos DB SDK query performance best practices	https://learn.microsoft.com/en-us/azure/cosmos-db/performance-tips-query-sdk
Tune query performance in Azure Cosmos DB for PostgreSQL	https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-performance-tuning
Choose distribution columns in Cosmos DB for PostgreSQL	https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-choose-distribution-column
Optimize pgvector performance in Azure Cosmos DB for PostgreSQL	https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-optimize-performance-pgvector
Use priority-based execution for Cosmos DB workloads	https://learn.microsoft.com/en-us/azure/cosmos-db/priority-based-execution-faq
Estimate and manage Cosmos DB request units	https://learn.microsoft.com/en-us/azure/cosmos-db/request-units
Apply best practices for scaling Cosmos DB throughput	https://learn.microsoft.com/en-us/azure/cosmos-db/scaling-provisioned-throughput-best-practices
Design synthetic partition keys in Cosmos DB	https://learn.microsoft.com/en-us/azure/cosmos-db/synthetic-partition-keys
Optimize Cosmos DB request unit consumption	https://learn.microsoft.com/en-us/azure/cosmos-db/understand-request-unit-consumption
Optimize Azure Managed Cassandra performance	https://learn.microsoft.com/en-us/azure/managed-instance-apache-cassandra/best-practice-performance
Apply resilience best practices to Cassandra apps	https://learn.microsoft.com/en-us/azure/managed-instance-apache-cassandra/resilient-applications
Use write-through cache to reduce Cassandra latency	https://learn.microsoft.com/en-us/azure/managed-instance-apache-cassandra/write-through-cache

Decision Making

Topic	URL
Choose analytics and BI options for Azure Cosmos DB data	https://learn.microsoft.com/en-us/azure/cosmos-db/analytics-and-business-intelligence-overview
Live dual-write migration to Cosmos DB Cassandra	https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/migrate-data-dual-write-proxy
Choose scaling options for Cosmos DB Cassandra API	https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/scale-account-throughput
Choose Azure Cosmos DB consistency levels	https://learn.microsoft.com/en-us/azure/cosmos-db/consistency-levels
Convert vCores to Cosmos DB RU/s for migration	https://learn.microsoft.com/en-us/azure/cosmos-db/convert-vcore-to-request-unit
Decide when to use Cosmos DB dedicated gateway	https://learn.microsoft.com/en-us/azure/cosmos-db/dedicated-gateway
Estimate Azure Cosmos DB RU/s and costs	https://learn.microsoft.com/en-us/azure/cosmos-db/estimate-ru-with-capacity-planner
Manage multitenant throughput with Cosmos DB fleet pools	https://learn.microsoft.com/en-us/azure/cosmos-db/fleet-pools
Use global secondary indexes in Azure Cosmos DB	https://learn.microsoft.com/en-us/azure/cosmos-db/global-secondary-indexes
Choose Cosmos DB manual vs autoscale throughput	https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-choose-offer
Migrate from Cosmos DB .NET bulk executor to SDK v3 bulk support	https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-migrate-from-bulk-executor-library
Migrate from Java bulk executor to Cosmos DB Java V4 bulk support	https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-migrate-from-bulk-executor-library-java
Migrate from change feed processor library to .NET V3 SDK	https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-migrate-from-change-feed-library
Migrate from Cosmos DB Kafka connector V1 to V2	https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-migrate-from-kafka-connector-v1-to-v2
Plan and size Cosmos DB integrated cache	https://learn.microsoft.com/en-us/azure/cosmos-db/integrated-cache
Migrate Cosmos DB legacy metrics APIs to Azure Monitor	https://learn.microsoft.com/en-us/azure/cosmos-db/legacy-migrate-az-monitor
Decide and migrate to continuous backup in Cosmos DB	https://learn.microsoft.com/en-us/azure/cosmos-db/migrate-continuous-backup
Upgrade applications to Azure Cosmos DB .NET SDK v2	https://learn.microsoft.com/en-us/azure/cosmos-db/migrate-dotnet-v2
Upgrade applications to Azure Cosmos DB .NET SDK v3	https://learn.microsoft.com/en-us/azure/cosmos-db/migrate-dotnet-v3
Upgrade applications to Azure Cosmos DB Java SDK v4	https://learn.microsoft.com/en-us/azure/cosmos-db/migrate-java-v4-sdk
Decide between Cosmos DB MongoDB and MongoDB Atlas	https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/compare-mongodb-atlas
Evaluate benefits of upgrading to Cosmos DB MongoDB 4.0+	https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/compression-cost-savings
Map MongoDB consistency to Cosmos DB levels	https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/consistency-mapping
Plan RU/s capacity and cost for Cosmos DB MongoDB API	https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/estimate-ru-capacity-planner
Decide and migrate from Cosmos DB for MongoDB to DocumentDB	https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/how-to-migrate-documentdb
Plan pre-migration steps from MongoDB to Cosmos DB	https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/pre-migration-steps
Plan Cosmos DB network bandwidth usage and costs	https://learn.microsoft.com/en-us/azure/cosmos-db/network-bandwidth
Request Cosmos DB data restore from periodic backups via support	https://learn.microsoft.com/en-us/azure/cosmos-db/periodic-backup-request-data-restore
Plan migration from Cosmos DB PostgreSQL to Elastic Cluster	https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-benefits-database-postgresql
Understand burstable compute workloads on Cosmos DB	https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-burstable-compute
Plan and manage Cosmos DB for PostgreSQL cluster upgrades	https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-upgrade
Determine application type for distributed modeling	https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-app-type
Choose initial cluster size for Azure Cosmos DB for PostgreSQL	https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-scale-initial
Choose shard count for distributed tables in Cosmos DB for PostgreSQL	https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-shard-count
Classify workloads for Cosmos DB for PostgreSQL scaling	https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/quickstart-build-scalable-apps-classify
Classify and design scalable Cosmos DB for PostgreSQL apps	https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/quickstart-build-scalable-apps-overview
Plan compute and storage for Azure Cosmos DB for PostgreSQL clusters	https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/resources-compute
Estimate and optimize pricing for Azure Cosmos DB for PostgreSQL	https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/resources-pricing
Choose Azure regions and resiliency options for Azure Cosmos DB for PostgreSQL	https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/resources-regions
Choose Azure Cosmos DB SQL SDK connectivity modes	https://learn.microsoft.com/en-us/azure/cosmos-db/sdk-connection-modes
Choose Cosmos DB serverless vs provisioned throughput	https://learn.microsoft.com/en-us/azure/cosmos-db/serverless
Use Azure Cosmos DB for Table with Azure Table Storage	https://learn.microsoft.com/en-us/azure/cosmos-db/table/support
Configure global distribution for Azure Cosmos DB for Table	https://learn.microsoft.com/en-us/azure/cosmos-db/table/tutorial-global-distribution
Decide between Cosmos DB provisioned and serverless	https://learn.microsoft.com/en-us/azure/cosmos-db/throughput-serverless
Use Cosmos DB Migration Assistant for RDBMS decisions	https://learn.microsoft.com/en-us/azure/cosmos-db/vscode-extension/cosmos-db-migration-assistant
Choose dual-write proxy migration for Cassandra	https://learn.microsoft.com/en-us/azure/managed-instance-apache-cassandra/dual-write-proxy-migration
Decide on Apache Spark-based Cassandra migration	https://learn.microsoft.com/en-us/azure/managed-instance-apache-cassandra/spark-migration