Windows Server 2012/R2, a cornerstone of server operating systems, reached its end-of-life on October 10, 2023. This cessation of regular security updates leaves systems vulnerable, as they are now exposed to security risks. If upgrading to a newer Windows Server version is not currently an option because your organization has legacy systems with custom-built or third-party applications that are not yet compatible with a newer OS, then understanding your options for Extended Security Updates (ESU) is crucial.
