1---2name: azure-digital-twins3description: Expert knowledge for Azure Digital Twins development including troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, integrations & coding patterns, and deployment. Use when modeling DTDL graphs, integrating IoT Hub/ADx, configuring endpoints/routes, securing access, or tuning query units, and other Azure Digital Twins related development tasks. Not for Azure IoT Hub (use azure-iot-hub), Azure IoT Central (use azure-iot-central), Azure IoT Operations (use azure-iot-operations).4---5# Azure Digital Twins Skill
6
7This skill provides expert guidance for Azure Digital Twins. 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.
8
9## How to Use This Skill
10
11> **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
12
13> **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](https://github.com/MicrosoftDocs/mcp/blob/main/README.md)
14
15This skill requires **network access** to fetch documentation content:
16- **Preferred**: Use `mcp_microsoftdocs:microsoft_docs_fetch` with query string `from=learn-agent-skill`. Returns Markdown.
17- **Fallback**: Use `fetch_webpage` with query string `from=learn-agent-skill&accept=text/markdown`. Returns Markdown.
18
19## Category Index
20
21| Category | Lines | Description |
22|----------|-------|-------------|
23| Troubleshooting | L37-L46 | Diagnosing and fixing common Azure Digital Twins issues: 403/404 errors, Explorer auth problems, CLI parse failures, known bugs, and performance troubleshooting. |
24| Best Practices | L47-L52 | Guidance on modeling best practices: converting RDF/OWL ontologies to DTDL, extending DTDL for Azure Digital Twins, and designing effective tagging patterns for twin graphs. |
25| Decision Making | L53-L57 | Guidance on selecting DTDL-based industry ontologies for your twin models and instructions for migrating from Azure Digital Twins preview control plane APIs to current APIs. |
26| Architecture & Design Patterns | L58-L63 | Designing resilient Digital Twins solutions (HA/DR) and translating industry ontologies into DTDL models for interoperable twin graphs. |
27| Limits & Quotas | L64-L69 | Details on Azure Digital Twins query unit usage, plus service limits, throttling behavior, and how to view/request changes to adjustable quotas. |
28| Security | L70-L78 | Security guidance for Azure Digital Twins: auth with Entra app registrations, client authentication, Private Link setup, and handling customer personal data and best practices. |
29| Configuration | L79-L103 | Configuring and operating Azure Digital Twins: instance setup, security, endpoints/routes, data history, monitoring, graph/twin/model management, Explorer/3D tools, and query language usage. |
30| Integrations & Coding Patterns | L104-L120 | Using SDKs, REST/CLI, queries, and plugins to integrate Azure Digital Twins with IoT Hub, Azure Data Explorer, Functions, Power Platform, and .NET clients, including query and DTDL model patterns. |
31| Deployment | L121-L124 | Guidance for moving an Azure Digital Twins instance to a different region, including prerequisites, supported scenarios, and step-by-step migration procedures. |
32
33### Troubleshooting
34| Topic | URL |
35|-------|-----|
36| Fix Azure Digital Twins 403 Forbidden errors | https://learn.microsoft.com/en-us/azure/digital-twins/troubleshoot-error-403-digital-twins |
37| Fix Azure Digital Twins 404 sub-domain not found errors | https://learn.microsoft.com/en-us/azure/digital-twins/troubleshoot-error-404-digital-twins |
38| Resolve Azure Digital Twins Explorer authentication errors | https://learn.microsoft.com/en-us/azure/digital-twins/troubleshoot-error-azure-digital-twins-explorer-authentication |
39| Resolve Azure Digital Twins CLI parse failed errors | https://learn.microsoft.com/en-us/azure/digital-twins/troubleshoot-error-cli-parse |
40| Resolve known issues in Azure Digital Twins | https://learn.microsoft.com/en-us/azure/digital-twins/troubleshoot-known-issues |
41| Troubleshoot Azure Digital Twins performance issues | https://learn.microsoft.com/en-us/azure/digital-twins/troubleshoot-performance |
42
43### Best Practices
44| Topic | URL |
45|-------|-----|
46| Extend DTDL ontologies for Azure Digital Twins | https://learn.microsoft.com/en-us/azure/digital-twins/concepts-ontologies-extend |
47| Implement tagging patterns for Azure Digital Twins | https://learn.microsoft.com/en-us/azure/digital-twins/how-to-use-tags |
48
49### Decision Making
50| Topic | URL |
51|-------|-----|
52| Migrate from Azure Digital Twins preview control plane APIs | https://learn.microsoft.com/en-us/azure/digital-twins/resources-migrate-from-preview-apis |
53
54### Architecture & Design Patterns
55| Topic | URL |
56|-------|-----|
57| Plan high availability and disaster recovery for Digital Twins | https://learn.microsoft.com/en-us/azure/digital-twins/concepts-high-availability-disaster-recovery |
58| Convert industry ontologies to DTDL for Azure Digital Twins | https://learn.microsoft.com/en-us/azure/digital-twins/concepts-ontologies-convert |
59
60### Limits & Quotas
61| Topic | URL |
62|-------|-----|
63| Understand Query Unit consumption in Digital Twins | https://learn.microsoft.com/en-us/azure/digital-twins/concepts-query-units |
64| Azure Digital Twins service limits and adjustable quotas | https://learn.microsoft.com/en-us/azure/digital-twins/reference-service-limits |
65
66### Security
67| Topic | URL |
68|-------|-----|
69| Apply security best practices to Azure Digital Twins | https://learn.microsoft.com/en-us/azure/digital-twins/concepts-security |
70| Implement client authentication for Azure Digital Twins | https://learn.microsoft.com/en-us/azure/digital-twins/how-to-authenticate-client |
71| Create Entra app registration for Azure Digital Twins | https://learn.microsoft.com/en-us/azure/digital-twins/how-to-create-app-registration |
72| Enable Private Link for Azure Digital Twins | https://learn.microsoft.com/en-us/azure/digital-twins/how-to-enable-private-link |
73| Handle customer personal data in Azure Digital Twins | https://learn.microsoft.com/en-us/azure/digital-twins/resources-customer-data-requests |
74
75### Configuration
76| Topic | URL |
77|-------|-----|
78| Interpret Azure Digital Twins event notifications | https://learn.microsoft.com/en-us/azure/digital-twins/concepts-event-notifications |
79| Configure endpoints and event routes in Digital Twins | https://learn.microsoft.com/en-us/azure/digital-twins/concepts-route-events |
80| Set up Azure Digital Twins data history connection | https://learn.microsoft.com/en-us/azure/digital-twins/how-to-create-data-history-connection |
81| Configure Azure Digital Twins event endpoints | https://learn.microsoft.com/en-us/azure/digital-twins/how-to-create-endpoints |
82| Configure event routes and filters in Azure Digital Twins | https://learn.microsoft.com/en-us/azure/digital-twins/how-to-create-routes |
83| Manage Azure Digital Twins graphs and relationships | https://learn.microsoft.com/en-us/azure/digital-twins/how-to-manage-graph |
84| Manage DTDL models in Azure Digital Twins | https://learn.microsoft.com/en-us/azure/digital-twins/how-to-manage-model |
85| Manage individual digital twins via APIs/SDKs | https://learn.microsoft.com/en-us/azure/digital-twins/how-to-manage-twin |
86| Configure monitoring, metrics, and logs for Azure Digital Twins | https://learn.microsoft.com/en-us/azure/digital-twins/how-to-monitor |
87| Provision and secure Digital Twins via CLI | https://learn.microsoft.com/en-us/azure/digital-twins/how-to-set-up-instance-cli |
88| Set up an Azure Digital Twins instance in portal | https://learn.microsoft.com/en-us/azure/digital-twins/how-to-set-up-instance-portal |
89| Use 3D Scenes Studio features with Digital Twins | https://learn.microsoft.com/en-us/azure/digital-twins/how-to-use-3d-scenes-studio |
90| Operate Azure Digital Twins Explorer features | https://learn.microsoft.com/en-us/azure/digital-twins/how-to-use-azure-digital-twins-explorer |
91| Use FROM clause in Azure Digital Twins query language | https://learn.microsoft.com/en-us/azure/digital-twins/reference-query-clause-from |
92| Use JOIN clause in Azure Digital Twins graph queries | https://learn.microsoft.com/en-us/azure/digital-twins/reference-query-clause-join |
93| Use MATCH clause for graph traversal in Azure Digital Twins | https://learn.microsoft.com/en-us/azure/digital-twins/reference-query-clause-match |
94| Use SELECT clause in Azure Digital Twins query language | https://learn.microsoft.com/en-us/azure/digital-twins/reference-query-clause-select |
95| Use WHERE clause in Azure Digital Twins queries | https://learn.microsoft.com/en-us/azure/digital-twins/reference-query-clause-where |
96| Use functions in Azure Digital Twins query language | https://learn.microsoft.com/en-us/azure/digital-twins/reference-query-functions |
97| Use operators in Azure Digital Twins query language | https://learn.microsoft.com/en-us/azure/digital-twins/reference-query-operators |
98| Reserved keywords in Azure Digital Twins query language | https://learn.microsoft.com/en-us/azure/digital-twins/reference-query-reserved |
99
100### Integrations & Coding Patterns
101| Topic | URL |
102|-------|-----|
103| Work with Azure Digital Twins APIs and SDKs | https://learn.microsoft.com/en-us/azure/digital-twins/concepts-apis-sdks |
104| Use Azure Digital Twins CLI command set | https://learn.microsoft.com/en-us/azure/digital-twins/concepts-cli |
105| Query Azure Digital Twins data with Azure Data Explorer plugin | https://learn.microsoft.com/en-us/azure/digital-twins/concepts-data-explorer-plugin |
106| Configure data history with Azure Data Explorer | https://learn.microsoft.com/en-us/azure/digital-twins/concepts-data-history |
107| Use Azure Digital Twins query language | https://learn.microsoft.com/en-us/azure/digital-twins/concepts-query-language |
108| Ingest IoT Hub telemetry into Azure Digital Twins | https://learn.microsoft.com/en-us/azure/digital-twins/how-to-ingest-iot-hub-data |
109| Parse and validate DTDL models with .NET | https://learn.microsoft.com/en-us/azure/digital-twins/how-to-parse-models |
110| Query Azure Digital Twins graphs with examples | https://learn.microsoft.com/en-us/azure/digital-twins/how-to-query-graph |
111| Set up twin-to-twin event propagation with Azure Functions | https://learn.microsoft.com/en-us/azure/digital-twins/how-to-send-twin-to-twin-events |
112| Call Azure Digital Twins REST APIs using .http files | https://learn.microsoft.com/en-us/azure/digital-twins/how-to-use-apis |
113| Use Power Platform connector with Azure Digital Twins | https://learn.microsoft.com/en-us/azure/digital-twins/how-to-use-power-platform-logic-apps-connector |
114| Code a .NET client for Azure Digital Twins | https://learn.microsoft.com/en-us/azure/digital-twins/tutorial-code |
115| Use Azure CLI commands with Digital Twins | https://learn.microsoft.com/en-us/azure/digital-twins/tutorial-command-line-cli |
116
117### Deployment
118| Topic | URL |
119|-------|-----|
120| Move an Azure Digital Twins instance across regions | https://learn.microsoft.com/en-us/azure/digital-twins/how-to-move-regions |
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