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Types of electronic signatures: QES, AES, and SES explained

calendar_today July 16, 2026 person Yuliia Derkach domain signnow

An electronic signature is electronic data used by a signer to approve or agree to a document’s terms — a concept that enjoys widespread global acceptance. Under the EU’s eIDAS Regulation, eSignatures fall into three legally distinct tiers: simple (SES), advanced (AES), and qualified (QES). Each tier carries a different level of identity assurance and…

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