azure-finops

AzureFinOps Skill

Azure cost optimization through reservation analysis, waste discovery, and stakeholder reporting.

Important

All Azure operations are READ-ONLY — zero modifications to any resource
Primary output language: Portuguese (BR) for stakeholder responses
Python CLI fallback: uv run python -m azure_finops when MCP/CLI auth unavailable

Workflow	Trigger	File
ValidateCosts	"validate costs", "are these reservations or PAYG", "check billing"	`Workflows/ValidateCosts.md`
FindWaste	"find waste", "orphaned disks", "orphaned resources"	`Workflows/FindWaste.md`
CoverageAnalysis	"reservation coverage", "reservation gaps", "savings analysis"	`Workflows/CoverageAnalysis.md`
DraftResponse	"draft response for", "resposta para", "executive summary"	`Workflows/DraftResponse.md`

Example 1 — Cost Validation:

"Are these January costs reservations or pay-as-you-go?" Routes to: Workflows/ValidateCosts.md

Example 2 — Waste Discovery:

"Find orphaned disks and wasted resources across all subscriptions" Routes to: Workflows/FindWaste.md

Example 3 — Executive Response:

"Draft a response for Jean about the January billing anomalies" Routes to: Workflows/DraftResponse.md

Reservation matching: SKU naming differs between usage data and purchase data — Standard_D8s_v3 in usage vs D8sv3 in RI. A direct join misses 100%.
Savings Plan vs Reservation can stack — calculators that pick one ignore the combined savings.
PAYG vs RI pricing: Marketplace listings are excluded from RI — surprise unreserved charges show up for SQL Server BYOL, etc.
Cost data lag is 24-48 hours — same-day analyses miss recent activity entirely.
RI scope (shared vs single-subscription): wrong scope means the RI applies to unintended workloads — and you discover it months later in an audit.
Currency conversion in EA reports: exchange rate is locked at month close; mid-month estimates use a different rate than the final invoice.