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Browse the Glossary - X - WhatIs

https://techtarget.com/whatis/definitions/X

“X.509 certificate - An X.509 certificate is a digital certificate that uses the widely accepted international X. x86-64 - x86-64 (also called x86_64, x64, or amd64) is the 64-bit CPU architecture that is used in Intel and AMD processors. XaaS (anything as a service) - XaaS is a collective term that...” (from the page’s text)

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