Account Management is the front door for subscription totals, capability and environment breakdowns, billing reports, and the APIs that expose this same data programmatically.
Account Management surfaces your metered usage as ready-made summaries, breakdowns, and reports, and the same data is exportable for finance integrations.
Account Management gives you hourly reporting on DPS usage, daily updates on your current budget, and a drill-down view that lets you compare costs across time periods, environments, and capabilities.
You can get an overview of your Dynatrace Platform Subscription consumption in Account Management > Subscription.

For a detailed walkthrough of the UI, see Overview (Dynatrace Platform Subscription).
Your billing report provides details about accrued costs per booking date. Use this view to determine which Dynatrace monitoring costs were recognized and booked on which day.
Billing reports are available in Account Management > Subscription > Billing report.
For more information, see Billing report (Dynatrace Classic).
Every usage and cost data point you see in Account Management is also available via the Dynatrace API. This means you can export your consumption data, share it across teams, and integrate it into any tool your organization already uses, from finance systems to custom dashboards. Common use cases:
For a full walkthrough including OAuth setup and request examples, see Export cost data via API (Dynatrace Classic).
You can also explore all available endpoints directly in the API Explorer in Account Management or via the Account Management API documentation.