SAP Revenue Accounting and Reporting is a solution for recognizing revenue according to IFRS 15 and ASC 606. It allows companies to recognize revenue when performance obligations are fulfilled rather than when invoices are issued. Key features include handling multiple element arrangements, parallel accounting for different standards, and integration with source systems like SD. Revenue Accounting manages the fulfillment of performance obligations and recognizes revenue through postings to Financial Accounting. It provides more flexibility and transparency than existing revenue recognition in SAP, such as SD Revenue Recognition.