Definitions of digital filing clarify electronic registry, e-form processes and straight through approval, and certifying authority roles. Definitions prescribe meanings for key electronic filing and registry concepts: Digital Signature, Digital Signature Certificate, Certifying Authority, electronic record, electronic mail, electronic registry, and e-form as the form in the Annexure. Operational entities and mechanisms are defined, including Registrar's Facilitation Office, Regional Director, and Straight Through Process for system approvals. Unspecified terms are to be read according to the Companies Act and the Information Technology Act or related rules to maintain statutory consistency.