ESI

electronically stored information, ESI
data or information of any kind and from any source, whose temporal existence is evidenced by being stored in or on any electronic medium
Note 1 to entry: ESI includes traditional e-mail, memos, letters, spreadsheets, databases, office documents, presentdata or information of any kind and from any source, whose temporal existence is evidenced by being stored in or on any electronic medium
Note 1 to entry: ESI includes traditional e-mail, memos, letters, spreadsheets, databases, office documents, presentations and other electronic formats commonly found on a computer. ESI also includes system, application and file-associated metadata such as timestamps, revision history, file type, etc.
Note 2 to entry: Electronic medium can take the form of, but is not limited to, storage devices and storage elements.
(SOURCE: JIS Z 6015:2022, 4.155)