E-invoicing is the electronic exchange of an invoicing document between a supplier and a buyer. Sent and received via a structured electronic format allows the invoice to be automatically processed without the need for traditional paperwork.
E-invoicing is now common practice for businesses of all sizes across the globe and has steadily grown over the past 30 years.
Saving on paper, the process is entirely digital in its lifecycle with electronic formats for e-invoices including (but not limited to): XML, EDIFACT, CSV.
Source Unifiedpost.com