The usage and billing APIs

Although the portal is a great way to find usage, billing, and invoice information manually, Azure also provides the following:

• The Invoice Download API: Use this API to download invoices.
• The Resource Usage API: Use this API to get estimated Azure resource consumption data.
• The RateCard API: Use the RateCard API to get a list of available Azure resources and estimated pricing information for each of them.

These APIs can be used to programmatically retrieve details and create customized dashboards and reports. Any programming or scripting language can use these APIs and create a complete billing solution.