CLOUD CONTROL DICTIONARY

Master the language of cloud cost control.

Cloud cost optimization is the practice of reducing waste while preserving reliability. These definitions explain the financial mechanics, utilization signals, and audit concepts teams need before acting on cloud savings recommendations.

FinOps

Framework & Culture

A portmanteau of Finance and DevOps, FinOps is an operational framework and cultural practice that brings financial accountability to the variable spend model of cloud computing. It enables engineering, finance, and business teams to collaborate on data-driven decision-making to optimize cloud value.

Core LoopInform → Optimize → Operate

Reserved Instances

Commitment Models

A billing discount model where a customer commits to utilizing a specific amount of cloud compute or database capacity (typically a 1-year or 3-year term) in exchange for significantly reduced hourly rates compared to standard on-demand pricing.

Savings RatioCommitment Rate = On-Demand Rate × (1 - Discount %)
LISTNET

Net vs. List Price

Contract Mechanics

List price represents the standard public retail rate advertised by cloud providers. Net price represents the actual billed rate after incorporating custom enterprise discounts, negotiated enterprise agreements (EA), or reservation models. Finding calculations must always use net rates to prevent double-discounting errors.

Net CalculationNet Cost = List Retail Cost × (1 - Enterprise Discount %)

Idle Resource

Utilization & Waste

An active cloud resource (such as a Virtual Machine, Database, or Load Balancer) that continues to run and accrue static hourly charges but performs little or no meaningful operational work. Typically identified by sustained low CPU, memory, IOPS, and network throughput thresholds over a 14-day to 30-day window.

Idle ThresholdMax CPU < 5% && Active IOPS = 0 over 30 Days

Cloud Cost Audit

Governance

A systematic, data-backed inspection of all deployed resources across cloud subscriptions. The audit analyzes historical performance telemetry, active billing contracts, and resource metadata to verify and prove cost-saving opportunities, establishing a verified audit trail.

Audit IntegrityFinding = Metric Evidence + Net SKU Ratio Match
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