Azure's tool for analyzing, monitoring, and optimizing cloud spend. It lets you create budgets, set cost alerts, and visualize spend by subscription, resource group, or tag.
A recurring cost-management topic in AZ-900. Along with the pricing calculator (estimate before deploying) and the Azure Migrate business case (compare on-premises with Azure; it replaces the former TCO calculator), it forms Azure's cost tooling. Question: which tool sets up alerts when spend crosses a threshold? Cost Management.
Azure Cost Management is a concept that can show up on the exam. Check the full guide to see it in context.