Telemetry Schema Reference

This document is the authoritative reference for all telemetry events, fields, classifications, and data pipeline details in the Azure Developer CLI (azd).

Events

Events are defined in cli/azd/internal/tracing/events/events.go. Each event is emitted as an OpenTelemetry span name or event name.

Constant	Value	Description
CommandEventPrefix	cmd.	Prefix for all command events (via GetCommandEventName)
VsRpcEventPrefix	vsrpc.	Prefix for VS Code JSON-RPC events
McpEventPrefix	mcp.	Prefix for MCP tool invocation events
PackBuildEvent	tools.pack.build	Cloud Native Buildpacks build event
AgentTroubleshootEvent	agent.troubleshoot	Agent troubleshooting event
ExtensionRunEvent	ext.run	Extension execution event
ExtensionInstallEvent	ext.install	Extension install/upgrade event
ExtensionUpgradeEvent	ext.upgrade	Single extension upgrade attempt
ExtensionPromoteEvent	ext.promote	Extension registry promotion (e.g., dev → main)
CopilotInitializeEvent	copilot.initialize	Copilot initialization event
CopilotSessionEvent	copilot.session	Copilot session lifecycle event
ProvisionValidationEvent	validation.provision	Local provision validation outcome
HooksExecEvent	hooks.exec	Lifecycle hook execution
AksPostprovisionSkipEvent	aks.postprovision.skip	AKS postprovision hook skipped (cluster not yet available)
ArmDeploySubscriptionEvent	arm.deploy.subscription	ARM subscription-scope deploy
ArmDeployResourceGroupEvent	arm.deploy.resourcegroup	ARM resource-group-scope deploy
ArmStackDeploySubscriptionEvent	arm.stack.deploy.subscription	Deployment stack at subscription scope
ArmStackDeployResourceGroupEvent	arm.stack.deploy.resourcegroup	Deployment stack at resource-group scope
ArmWhatIfSubscriptionEvent	arm.whatif.subscription	What-if preview at subscription scope
ArmWhatIfResourceGroupEvent	arm.whatif.resourcegroup	What-if preview at resource-group scope
ArmValidateSubscriptionEvent	arm.validate.subscription	Template validation at subscription scope
ArmValidateResourceGroupEvent	arm.validate.resourcegroup	Template validation at resource-group scope
DeployAppServiceZipEvent	deploy.appservice.zip	App Service zip-deploy attempt
ContainerCredentialsEvent	container.credentials	Container registry credential lookup
ContainerPublishEvent	container.publish	Container image publish (push)
ContainerRemoteBuildEvent	container.remotebuild	Azure-side remote container build
ExeGraphRunEvent	exegraph.run	Root span for executing an entire graph
ExeGraphStepEvent	exegraph.step	Single step execution within the graph
AspireUnsupportedAppHostEvent	aspire.apphost.unsupported	Detected an unsupported Aspire polyglot (non-C#) AppHost during app detection

Fields

Fields are defined in cli/azd/internal/tracing/fields/fields.go. Each field has a classification and purpose that governs how it may be stored, queried, and retained.

Application-Level (Resource Attributes)

These are set once at process startup via resource.New() and attached to every span.

Field	OTel Key	Classification	Purpose	Notes
Service name	service.name	—	—	Always "azd"
Service version	service.version	—	—	Build version string
OS type	os.type	—	—	e.g. linux, windows, darwin
OS version	os.version	SystemMetadata	PerformanceAndHealth	Kernel / build version
Host architecture	host.arch	SystemMetadata	PerformanceAndHealth	e.g. amd64, arm64
Runtime version	process.runtime.version	SystemMetadata	PerformanceAndHealth	Go version
Machine ID	machine.id	EndUserPseudonymizedInformation	BusinessInsight	MAC address hash
Dev Device ID	machine.devdeviceid	EndUserPseudonymizedInformation	BusinessInsight	SQM User ID
Execution environment	execution.environment	SystemMetadata	BusinessInsight	CI system detection
Installer	service.installer	SystemMetadata	FeatureInsight	How azd was installed

Experimentation

Field	OTel Key	Classification	Purpose
Assignment context	exp.assignmentContext	SystemMetadata	FeatureInsight

Identity and Account Context

Field	OTel Key	Classification	Purpose	Notes
Object ID	user_AuthenticatedId	—	—	From Application Insights contracts
Tenant ID	ad.tenant.id	SystemMetadata	BusinessInsight	Entra ID tenant
Account type	ad.account.type	SystemMetadata	BusinessInsight	"User" or "Service Principal"
Subscription ID	ad.subscription.id	OrganizationalIdentifiableInformation	PerformanceAndHealth	Azure subscription

Project Context (azure.yaml)

Field	OTel Key	Classification	Purpose	Notes
Template ID	project.template.id	SystemMetadata	FeatureInsight	Hashed
Template version	project.template.version	SystemMetadata	FeatureInsight	Hashed
Project name	project.name	SystemMetadata	FeatureInsight	Hashed
Service hosts	project.service.hosts	SystemMetadata	FeatureInsight	List of host types
Service targets	project.service.targets	SystemMetadata	FeatureInsight	List of deploy targets
Service languages	project.service.languages	SystemMetadata	FeatureInsight	List of languages
Service language	project.service.language	SystemMetadata	PerformanceAndHealth	Single service language
Platform type	platform.type	SystemMetadata	FeatureInsight	e.g. aca, aks

Config and Environment

Field	OTel Key	Classification	Purpose	Notes
Feature flags	config.features	SystemMetadata	FeatureInsight	Active feature flags
Environment name	env.name	SystemMetadata	FeatureInsight	Hashed

Command Entry-Point

Field	OTel Key	Classification	Purpose	Notes
Flags	cmd.flags	SystemMetadata	FeatureInsight	Which flags were passed
Argument count	cmd.args.count	SystemMetadata	FeatureInsight	Measurement
Entry point	cmd.entry	SystemMetadata	FeatureInsight	How the command was invoked

Error Attributes

Field	OTel Key	Classification	Purpose	Notes
Error category	error.category	SystemMetadata	PerformanceAndHealth
Error code	error.code	SystemMetadata	PerformanceAndHealth
Error type	error.type	SystemMetadata	PerformanceAndHealth	ResultCode or Go type for the classified error
Error chain types	error.chain.types	SystemMetadata	PerformanceAndHealth	Wrapped Go error type chain, outermost first

Error classification is handled by MapError in internal/cmd/errors.go, which categorizes errors into: update errors, auth errors, service (Azure) errors, deployment errors, extension errors, tool errors, sentinel errors, and network errors. Each receives an error.code, error.category, and contextual attributes.

Generic-only error chains now use the catch-all ResultCode internal.unclassified instead of the previous internal.errors_errorString. Use error.chain.types to inspect the concrete wrapper types behind that bucket. The removed error.inner and error.frame attributes were not emitted by azd spans.

Service Attributes

Field	OTel Key	Classification	Purpose	Notes
Service host	service.host	SystemMetadata	PerformanceAndHealth
Service name	service.name	SystemMetadata	PerformanceAndHealth
Status code	service.statusCode	SystemMetadata	PerformanceAndHealth	Measurement
Method	service.method	SystemMetadata	PerformanceAndHealth
Error code	service.errorCode	SystemMetadata	PerformanceAndHealth	Measurement; ARM deployment errors encode JSON objects with error.code and error.arm.frame_index
Correlation ID	service.correlationId	SystemMetadata	PerformanceAndHealth

Tool Attributes

Field	OTel Key	Classification	Purpose
Tool name	tool.name	SystemMetadata	FeatureInsight
Tool exit code	tool.exitCode	SystemMetadata	PerformanceAndHealth

Performance

Field	OTel Key	Classification	Purpose	Notes
Interaction time	perf.interact_time	SystemMetadata	PerformanceAndHealth	Measurement — time to first user prompt
Provision duration	perf.provision_duration_ms	SystemMetadata	PerformanceAndHealth	Measurement — wall-clock provisioning phase duration (ms)
Deploy duration	perf.deploy_duration_ms	SystemMetadata	PerformanceAndHealth	Measurement — wall-clock deploy phase duration (ms). Excludes package/publish (run concurrently with provision)
Total duration	perf.total_duration_ms	SystemMetadata	PerformanceAndHealth	Measurement — total wall-clock for the entire up-graph execution

Pack (Buildpacks)

Field	OTel Key	Classification	Purpose
Builder image	pack.builder.image	SystemMetadata	FeatureInsight
Builder tag	pack.builder.tag	SystemMetadata	FeatureInsight

Aspire

Field	OTel Key	Classification	Purpose	Notes
AppHost language	aspire.apphost.language	SystemMetadata	FeatureInsight	Fixed enum (typescript/python/go/java/rust); not hashed; not a measurement. Emitted on aspire.apphost.unsupported.

MCP

Field	OTel Key	Classification	Purpose
Client name	mcp.client.name	SystemMetadata	FeatureInsight
Client version	mcp.client.version	SystemMetadata	FeatureInsight

Init

Field	OTel Key	Classification	Purpose	Notes
Init method	init.method	SystemMetadata	FeatureInsight	template/app/project/environment/copilot
Detected databases	appinit.detected.databases	SystemMetadata	FeatureInsight
Detected services	appinit.detected.services	SystemMetadata	FeatureInsight
Confirmed databases	appinit.confirmed.databases	SystemMetadata	FeatureInsight
Confirmed services	appinit.confirmed.services	SystemMetadata	FeatureInsight
Modify add count	appinit.modify_add.count	SystemMetadata	FeatureInsight	Measurement
Modify remove count	appinit.modify_remove.count	SystemMetadata	FeatureInsight	Measurement
Last step	appinit.lastStep	SystemMetadata	FeatureInsight

Remote Build

Field	OTel Key	Classification	Purpose	Notes
Remote build count	container.remoteBuild.count	SystemMetadata	FeatureInsight	Measurement

JSON-RPC

Field	OTel Key	Classification	Purpose	Notes
RPC method	rpc.method	SystemMetadata	FeatureInsight
Request ID	rpc.jsonrpc.request_id	SystemMetadata	PerformanceAndHealth
Error code	rpc.jsonrpc.error_code	SystemMetadata	PerformanceAndHealth	Measurement

Agent

Field	OTel Key	Classification	Purpose
Fix attempts	agent.fix.attempts	SystemMetadata	PerformanceAndHealth

Extensions

Field	OTel Key	Classification	Purpose	Notes
Extension ID	extension.id	SystemMetadata	FeatureInsight
Extension version	extension.version	SystemMetadata	FeatureInsight
Extension installed	extension.installed	SystemMetadata	FeatureInsight	List of installed extensions, each formatted id@version
Extension version from	extension.version.from	SystemMetadata	FeatureInsight	Installed version before an upgrade
Extension version to	extension.version.to	SystemMetadata	FeatureInsight	Target version after an upgrade
Extension source	extension.source	SystemMetadata	FeatureInsight	Registry source used for the upgrade
Extension source kind	extension.source.kind	SystemMetadata	FeatureInsight	Allowed values: none, registered, location
Extension source from	extension.source.from	SystemMetadata	FeatureInsight	Registry source before a promotion
Extension source to	extension.source.to	SystemMetadata	FeatureInsight	Registry source after a promotion
Upgrade duration	extension.upgrade.duration_ms	SystemMetadata	PerformanceAndHealth	Measurement — time in ms for one upgrade
Upgrade outcome	extension.upgrade.outcome	SystemMetadata	FeatureInsight	Upgrade result status
Dependency of	extension.dependency_of	SystemMetadata	FeatureInsight	Parent extension for a dependency upgrade
Dependency upgrade count	extension.dependency_upgrade_count	SystemMetadata	FeatureInsight	Recursive dependency upgrade count

Update

Field	OTel Key	Classification	Purpose
Update channel	update.channel	SystemMetadata	FeatureInsight
Install method	update.installMethod	SystemMetadata	FeatureInsight
From version	update.fromVersion	SystemMetadata	FeatureInsight
To version	update.toVersion	SystemMetadata	FeatureInsight
Update result	update.result	SystemMetadata	FeatureInsight

Copilot Session

Field	OTel Key	Classification	Purpose	Notes
Session ID	copilot.session.id	SystemMetadata	FeatureInsight
Is new session	copilot.session.isNew	SystemMetadata	FeatureInsight
Message count	copilot.session.messageCount	SystemMetadata	FeatureInsight	Measurement

Copilot Init

Field	OTel Key	Classification	Purpose
Is first run	copilot.init.isFirstRun	SystemMetadata	FeatureInsight
Reasoning effort	copilot.init.reasoningEffort	SystemMetadata	FeatureInsight
Model	copilot.init.model	SystemMetadata	FeatureInsight
Consent scope	copilot.init.consentScope	SystemMetadata	FeatureInsight

Copilot Message

Field	OTel Key	Classification	Purpose	Notes
Mode	copilot.mode	SystemMetadata	FeatureInsight
Model	copilot.message.model	SystemMetadata	FeatureInsight
Input tokens	copilot.message.inputTokens	SystemMetadata	PerformanceAndHealth	Measurement
Output tokens	copilot.message.outputTokens	SystemMetadata	PerformanceAndHealth	Measurement
Billing rate	copilot.message.billingRate	SystemMetadata	BusinessInsight	Measurement
Premium requests	copilot.message.premiumRequests	SystemMetadata	BusinessInsight	Measurement
Duration (ms)	copilot.message.durationMs	SystemMetadata	PerformanceAndHealth	Measurement

Copilot Consent

Field	OTel Key	Classification	Purpose	Notes
Approved count	copilot.consent.approvedCount	SystemMetadata	FeatureInsight	Measurement
Denied count	copilot.consent.deniedCount	SystemMetadata	FeatureInsight	Measurement

Command-Specific Fields

The following fields are defined in fields.go.

Field	OTel Key	Classification	Purpose	Values
Auth method	auth.method	SystemMetadata	FeatureInsight	browser, device-code, service-principal-secret, service-principal-certificate, federated-github, federated-azure-pipelines, federated-oidc, managed-identity, external, oneauth, check-status
Env count	env.count	SystemMetadata	FeatureInsight	Measurement — number of environments
Hooks name	hooks.name	SystemMetadata	FeatureInsight	Built-in hook name (raw) or SHA-256 hash for extension/custom hooks. Known values: prebuild, postbuild, predeploy, postdeploy, predown, postdown, prepackage, postpackage, preprovision, postprovision, prepublish, postpublish, prerestore, postrestore, preup, postup
Hooks type	hooks.type	SystemMetadata	FeatureInsight	project, service, layer
Hooks kind	hooks.kind	SystemMetadata	FeatureInsight	Executor used to run the hook. Values: sh, pwsh, python, js, ts, dotnet
Pipeline provider	pipeline.provider	SystemMetadata	FeatureInsight	Resolved provider display name after auto-detection: GitHub, Azure DevOps
Pipeline auth	pipeline.auth	SystemMetadata	FeatureInsight	Emitted only when --auth-type is set on pipeline config: federated, client-credentials
Infra provider	infra.provider	SystemMetadata	FeatureInsight	provision/up/down: sorted, de-duplicated string slice of resolved providers — bicep/terraform/arm/pulumi verbatim, custom for any other (extension) provider (raw name not emitted); multi-layer projects that combine providers record each distinct value (e.g. ["bicep","terraform"]). infra generate/synth: the value read from azure.yaml's infra.provider directly as a single string (bicep/terraform/arm/pulumi, auto when unset, or custom for any other (extension) provider — raw name not emitted)

App Service Deploy

Field	OTel Key	Classification	Purpose	Notes
Deploy attempt	deploy.appservice.attempt	SystemMetadata	PerformanceAndHealth	Measurement — retry attempt number for App Service zip deploy
Deploy linux	deploy.appservice.linux	SystemMetadata	FeatureInsight	Whether the deploy targets a Linux web app

Tool Management

Telemetry for active azd tool install / upgrade / check operations and the dormant first-run field contract. Only built-in tool IDs (e.g. az-cli) and version strings are captured — no file paths, no user-identifiable data, no raw error text.

Dormant tool first-run (reserved)

The first-run middleware is not currently registered, so these fields are not emitted. They remain defined to support a possible future redesign without changing the telemetry contract.

Field	OTel Key	Classification	Purpose	Notes
Skip reason	tool.firstrun.skip_reason	SystemMetadata	FeatureInsight	Why the first-run flow was bypassed. Values: env_var, no_prompt, ci_cd, non_interactive, already_completed, config_error
Opt-in	tool.firstrun.opt_in	SystemMetadata	FeatureInsight	Whether the user accepted the first-run prompt
Tools detected	tool.firstrun.tools_detected	SystemMetadata	FeatureInsight	Measurement — built-in tools already installed at first-run
Tools offered	tool.firstrun.tools_offered	SystemMetadata	FeatureInsight	Measurement — number of recommended tools offered
Tools selected	tool.firstrun.tools_selected	SystemMetadata	FeatureInsight	Measurement — number the user selected to install
Tools selected (names)	tool.firstrun.tools_selected_names	SystemMetadata	FeatureInsight	Comma-separated built-in tool IDs the user selected (e.g. az-cli,vscode-bicep,github-copilot-cli). Not user input — drawn from a fixed catalog
Tools deselected (names)	tool.firstrun.tools_deselected_names	SystemMetadata	FeatureInsight	Comma-separated built-in tool IDs the user deselected
Outcome	tool.firstrun.outcome	SystemMetadata	FeatureInsight	Terminal state. Values: completed, declined, cancelled, detect_failed, install_failed. Mutually exclusive with skip_reason
Install success count	tool.firstrun.install_success_count	SystemMetadata	FeatureInsight	Measurement — first-run-scoped counterpart of tool.install.success_count
Install failure count	tool.firstrun.install_failure_count	SystemMetadata	FeatureInsight	Measurement — first-run-scoped counterpart of tool.install.failure_count
Install failed IDs	tool.firstrun.install_failed_ids	SystemMetadata	FeatureInsight	Comma-separated built-in tool IDs whose first-run install failed
Install duration	tool.firstrun.install_duration_ms	SystemMetadata	FeatureInsight	Measurement — first-run-scoped install duration in ms

Tool install / upgrade / check

Field	OTel Key	Classification	Purpose	Notes
Tool ID	tool.id	SystemMetadata	FeatureInsight	Built-in tool ID for single-tool operations. Values drawn from a fixed catalog (e.g. az-cli, vscode-bicep, github-copilot-cli, azure-mcp-server)
Tool IDs	tool.ids	SystemMetadata	FeatureInsight	Comma-separated built-in tool IDs for batch operations
Dry run	tool.dry_run	SystemMetadata	FeatureInsight	Whether --dry-run was specified
Install strategy	tool.install.strategy	SystemMetadata	FeatureInsight	Install backend. Values come from strategy.PackageManager (e.g., winget, brew, apt, npm, code); command for command-based installs with no package manager; manual when the named package manager is unavailable on the platform
Install success	tool.install.success	SystemMetadata	FeatureInsight	Whether a single-target install/upgrade succeeded
Install success count	tool.install.success_count	SystemMetadata	FeatureInsight	Measurement — number of tools that succeeded in a batch
Install failure count	tool.install.failure_count	SystemMetadata	FeatureInsight	Measurement — number of tools that failed in a batch
Install failed IDs	tool.install.failed_ids	SystemMetadata	FeatureInsight	Comma-separated built-in tool IDs whose install/upgrade failed. Per-tool error messages are intentionally not captured
Install duration	tool.install.duration_ms	SystemMetadata	FeatureInsight	Measurement — total install/upgrade duration in ms
Upgrade from version	tool.upgrade.from_version	SystemMetadata	FeatureInsight	Prior version (single-target upgrades)
Upgrade to version	tool.upgrade.to_version	SystemMetadata	FeatureInsight	New version after a successful upgrade
Updates available	tool.check.updates_available	SystemMetadata	FeatureInsight	Measurement — number of installed tools with an available upgrade

Provision Validation

Field	OTel Key	Classification	Purpose	Notes
Outcome	validation.provision.outcome	SystemMetadata	FeatureInsight	Values: passed, warnings_accepted, canceled_by_errors, canceled_by_user, skipped, error
Diagnostic IDs	validation.provision.diagnostics	SystemMetadata	FeatureInsight	List of diagnostic IDs emitted by provision validation checks (fixed code-defined enum, e.g. role_assignment_missing, role_assignment_conditional)
Rule IDs	validation.provision.rules	SystemMetadata	FeatureInsight	List of rule IDs that were executed (fixed code-defined enum, e.g. role_assignment_permissions)
Extension rule IDs	validation.provision.extension_rules	SystemMetadata	FeatureInsight	List of rule IDs from extension-provided validation checks (fixed code-defined enum)
Check type	validation.provision.check_type	SystemMetadata	FeatureInsight	Dispatch site: arm-provision (Bicep provider) or provision (provider-agnostic). Both share validation.provision; on Bicep provisions both fire, so consumers must group/filter by this to avoid double-counting
Warning count	validation.provision.warning.count	SystemMetadata	FeatureInsight	Measurement
Error count	validation.provision.error.count	SystemMetadata	FeatureInsight	Measurement

Provision

Field	OTel Key	Classification	Purpose	Notes
Cancellation	provision.cancellation	SystemMetadata	FeatureInsight	How a Ctrl+C interrupt during azd provision / azd up was handled. Values: none, leave_running, canceled, cancel_timed_out, cancel_timed_out_nested, cancel_raced_succeeded, cancel_raced_failed, cancel_raced_deleted, cancel_too_late, cancel_failed

Execution Graph (Scheduler)

The execution graph powers the parallel up / provision / deploy engine.

Field	OTel Key	Classification	Purpose	Notes
Step count	exegraph.step.count	SystemMetadata	PerformanceAndHealth	Measurement — total number of steps in the graph
Max concurrency	exegraph.max_concurrency	SystemMetadata	PerformanceAndHealth	Effective concurrency limit used for the run
Error policy	exegraph.error_policy	SystemMetadata	PerformanceAndHealth	fail_fast or continue_on_error
Step name	exegraph.step.name	SystemMetadata	PerformanceAndHealth	Hashed via fields.StringHashed — step names embed user-chosen service / layer names from azure.yaml (e.g., deploy-<svc.Name>, <layer.Name>)
Step deps	exegraph.step.deps	SystemMetadata	PerformanceAndHealth	Hashed slice via fields.StringSliceHashed — each entry is another step name that embeds user-chosen identifiers
Step tags	exegraph.step.tags	SystemMetadata	PerformanceAndHealth	Fixed internal vocabulary set by azd code (e.g., provision, deploy, package, cmdhook, event); emitted raw because it does not contain user input
Step timeout	exegraph.step.timeout_s	SystemMetadata	PerformanceAndHealth	Measurement — per-step timeout in seconds, when set

Multi-Layer Provision

Telemetry for the infra.layers[] parallel provisioning feature, emitted from internal/cmd/provision_graph.go.

Field	OTel Key	Classification	Purpose	Notes
Layer count	provision.layer.count	SystemMetadata	PerformanceAndHealth	Measurement — total number of infra.layers[] declared in azure.yaml for the current run; 0 or 1 means single-layer (the legacy path)
Max parallel	provision.layer.max_parallel	SystemMetadata	PerformanceAndHealth	Measurement — largest number of layers scheduled in a single dependency level after static analysis (maximum achievable parallelism, distinct from the configured exegraph.max_concurrency cap)
Safe-fallback count	provision.layer.safe_fallback_count	SystemMetadata	PerformanceAndHealth	Measurement — layers that triggered the safe-by-default detector fallback (forced to depend on all earlier layers)
Explicit dependsOn count	provision.layer.explicit_dependson_count	SystemMetadata	PerformanceAndHealth	Measurement — layers that used the explicit infra.layers[].dependsOn schema

Data Classifications

Classifications are defined in internal/telemetry/fields/fields.go and control how data is stored, retained, and who may access it.

Classification	Description
PublicPersonalData	Data the user has made public (e.g. GitHub username)
SystemMetadata	Non-personal system/environment metadata
CallstackOrException	Stack traces and exception details
CustomerContent	User-created content (files, messages) — highest sensitivity
EndUserPseudonymizedInformation	Pseudonymized user identifiers (hashed MACs, device IDs)
OrganizationalIdentifiableInformation	Organization-level identifiers (subscription IDs, tenant IDs)

Purposes

Each field is tagged with one or more purposes that govern its permitted use.

Purpose	Description
FeatureInsight	Understanding feature adoption and usage patterns
BusinessInsight	Business metrics (active users, organizations, growth)
PerformanceAndHealth	Performance monitoring, error rates, reliability

Hashing

Sensitive values are hashed before emission using functions in cli/azd/internal/tracing/fields/key.go.

Function	Behavior
CaseInsensitiveHash(value string) string	Lowercases, then SHA-256 hashes
StringHashed(k AttributeKey, v string) attribute.KeyValue	Creates an OTel attribute with a case-insensitive SHA-256 hash
StringSliceHashed(k AttributeKey, v []string) attribute.KeyValue	Hashes each element in a string slice independently

Fields that are hashed:

• project.template.id
• project.template.version
• project.name
• env.name
• exegraph.step.name (embeds user-chosen service / layer names from azure.yaml)
• exegraph.step.deps (each entry is another step name and therefore embeds user-chosen identifiers)
• hooks.name is hashed only when the value comes from an extension or custom hook (the built-in hook names are emitted raw)
• pack.builder.image, pack.builder.tag are hashed when a user-defined image is used

Data Pipeline

┌──────────────┐    ┌─────────────────────┐    ┌──────────────┐    ┌──────────────────┐
│  OTel Spans  │───▶│ App Insights        │───▶│  Disk Queue  │───▶│ Azure Monitor /  │
│  (in-process)│    │ Exporter (custom)   │    │  (~/.azd/)   │    │ Kusto            │
└──────────────┘    └─────────────────────┘    └──────────────┘    └──────────────────┘
                                                       │
                                                       ▼
                                               ┌──────────────┐
                                               │  telemetry   │
                                               │  upload cmd  │
                                               └──────────────┘

1. Instrumentation: Commands create OTel spans with attributes via tracing.Start and SetUsageAttributes.
2. Export: A custom Application Insights exporter converts spans to App Insights envelopes.
3. Queue: Envelopes are written to disk under ~/.azd/telemetry/.
4. Upload: The azd telemetry upload command (run as a background process) reads the queue and sends data to Azure Monitor.
5. Analysis: Data flows into Kusto tables for dashboarding and analysis via LENS jobs and cooked tables.