&quot;Redundant&quot; is not a pure synonym for &quot;unnecessary&quot; or &quot;obsolete,&quot; and in business-speak it used to have the meaning I shared above. It used to arise a lot in mergers, where &quot;efficiencies&quot; arose by consolidating functions and making entire departments &quot;redundant.&quot;<p>If buggy-whips were to disappear as a business because Buggy 2.0 (a&#x2F;k&#x2F;a the automobile) comes along, it was not commonplace to say that buggy -whip manufacturers or their employees were &quot;redundant,&quot; but to say they were &quot;obsolete.&quot;<p>That seems closer to the Windows 12 vs. Windows 11 teams analogy to me.