Hello ti r3ti
Welcome to Microsoft Q&A Platform, thanks for posting your query here.
The "Compute" field in an invoice refers to the charges associated with the usage of IaaS (Infrastructure as a Service) computing resources or virtual machines (VMs) within the Azure cloud platform.
It's important to review your Azure invoice in detail to understand the specific services and resources contributing to the Compute charges. The invoice will provide a breakdown of the usage and associated costs for each of these components, helping you understand the expenditure related to the Compute field.
Hope this helps.