In Short : What is Peppol and What are eInvoices?

Peppol is a set of standards and specifications that ensure the secure and fast transfer of electronic documents globally. It enables interoperability of eInvoices and other e-procurement documents, making global trade easier and ensuring compliance with regulatory requirements and taxation laws. Peppol uses standardized network architecture and business interoperability specifications. Access Points are the communication nodes in the Peppol network, allowing participants to exchange business documents worldwide. The benefits of eInvoicing include cost savings, greater efficiency, faster payments, lower risk of fraud, easier facilitation of global trade, easy ERP integration, and environmental friendliness.

Source Tickstar