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How It Works
Cloud providers charge resources at an on-demand list price by default. When a company purchases Reserved Instances, Savings Plans, or Committed Use Discounts, those commitments apply a lower rate to matching usage. The effective rate is calculated by dividing total actual spend by total usage units over a given period. It blends the discounted commitment rates with any remaining on-demand charges into a single average. A company running 80% of its workload on Savings Plans and 20% on-demand will have an effective rate somewhere between the two prices, weighted by consumption.
Why It Matters for Cloud Cost
The effective rate is the clearest measure of how well a cloud cost strategy is working. On-demand list prices are rarely what a company actually pays, and commitment discounts vary by service, region, and term. Without tracking the effective rate, finance teams cannot accurately forecast spend, benchmark efficiency, or confirm that discount programs are delivering expected savings. A rising effective rate signals that commitments are underutilized or that new on-demand spend is outpacing the covered baseline. AWS, Azure, and GCP all structure discounts differently: AWS uses Reserved Instances and Savings Plans, Azure uses Reservations and Azure Savings Plans, and GCP uses Committed Use Discounts. Tracking effective rate across all three providers gives a normalized view of actual cost performance.
ClearCost provides cost visibility and showback reporting across AWS, GCP, and Azure, giving teams a clear view of actual spend patterns against their cloud cost baseline.