Azure Upgrade

This skill handles assessment and automated upgrades of existing Azure workloads from one Azure service, hosting plan, or SKU to another — all within Azure. This includes plan/tier upgrades (e.g. Consumption → Flex Consumption), cross-service migrations (e.g. App Service → Container Apps), and SKU changes. It also covers Azure SDK for Java source-code modernization (e.g. legacy Java com.microsoft.azure.* → modern com.azure.*). This is NOT for cross-cloud migration — use azure-cloud-migrate for that.

Triggers

Rules

1. Follow phases in order. Skip or defer work only when the selected scenario explicitly permits it, and record the reason in the migration status.
2. Generate an assessment before any upgrade operations
3. Load the scenario reference and follow its rules
4. Use mcp_azure_mcp_get_azure_bestpractices and mcp_azure_mcp_documentation MCP tools
5. Destructive actions require ask_user — global-rules
6. Always confirm the target plan/SKU with the user before proceeding
7. Propose a name for any new resource (default: <source>-<target-suffix>, e.g. <source>-flex for Flex Consumption migrations) and announce the proposed name to the user before creating it so they can override without a blocking prompt. Same pattern applies to other newly-created resources (storage accounts, App Insights, etc.) — see the scenario reference for service-specific defaults.
8. Windows Consumption → Flex source-change gate: treat the source app as read-only by default. Immediately before every command that would change its settings, triggers, state, deployment, bindings, or existence, use ask_user to describe the exact change and obtain explicit approval. Approval is action-specific and cannot be reused for later source changes.
9. Never delete or stop the original app without explicit user confirmation
10. Keep approval-gated workflows moving: after each completed step, immediately perform the next read-only preflight. If the next action requires approval, invoke ask_user in the same turn — never stop after merely announcing the next step and wait for the user to re-engage.
11. All automation scripts must be idempotent and resumable

Upgrade Scenarios

Functions Consumption-to-Flex routing: For a named app, inspect its Azure platform and load only the matching Linux or Windows workflow. For subscription-wide discovery, evaluate both platforms: use az functionapp flex-migration list for Linux and the Windows workflow's manual discovery and compatibility checks for Windows. Label Windows results as candidates until per-app code compatibility is assessed.

SDK upgrade scenarios (e.g. Java legacy → modern) run a source-code modernization flow that is distinct from Azure service/plan/SKU upgrades: follow the scenario reference, not the Steps below.

No matching scenario? Use mcp_azure_mcp_documentation and mcp_azure_mcp_get_azure_bestpractices tools to research the upgrade path.

MCP Tools

Steps

1. Identify — Determine the source and target Azure plans/SKUs. Ask user to confirm.
2. Assess — Analyze existing app for upgrade readiness → load scenario reference (e.g., workflow.md)
3. Pre-migrate — Collect settings, identities, configs from the existing app
4. Upgrade — Execute the automated upgrade steps (create new resources, migrate settings, deploy code)
5. Validate — Use the checks defined by the selected scenario: verify target resource state, applicable HTTP endpoints and non-HTTP triggers, and monitoring. If access restrictions or unavailable test resources prevent execution, record validation as deferred — never relax security automatically or report functional success.
6. Ask User — Offer performance validation and IaC updates. Offer source cleanup only when the selected scenario confirms production cutover and all cleanup prerequisites are complete.
7. Hand off to azure-validate for deep validation or azure-deploy for CI/CD setup

Track progress in <UPGRADE_DIR>/upgrade-status.md — see Artifact Output Policy for path resolution.

References

• Global Rules
• Workflow Details
• Functions
  • Linux
    • Consumption to Flex Consumption
    • Assessment
    • Automation Scripts
  • Windows
    • Consumption to Flex Consumption
    • Assessment
    • Automation Scripts
• Redis
  • Redis (ACR or ACRE) to AMR Migration — routes to dedicated amr-migration-skill (ACR/OSS) or acre-to-amr-migration-skill (Enterprise)
• Java SDK Migration Templates
  • Plan Template
  • Progress Template
  • Summary Template

Next

After upgrade is validated, hand off to:

• azure-validate — for thorough post-upgrade validation
• azure-deploy — if the user wants to set up CI/CD for the new app