Electronically signing a Word document is the process of validating and affirming the authenticity of a document using digital signatures. It involves using an electronic signature to sign a document, which serves as proof that the individual who signed it has agreed to its contents and is legally bound by them. Digital signatures provide a secure and reliable way to legally bind individuals electronically, eliminating the need for wet-ink signatures. As such, they are becoming increasingly popular in the business world, allowing organizations to save time and money while still keeping documents safe and secure.