I it necessary to upgrade the version 2.3.x to 2.4.x or we can keep using 2.3.x ? can anyone explain it a bit
If you upgrade to the latest version of magento, will get any updated features which are added by adobe firm.
It is all your decision to use either older version or latest version.
Hello, there is not required to keep the older version because the updated version of Magento having some things like running fast, security updates, bug fixes, etc. from the older veriosn so I suggest you upgrade your Magento from old to new.