As I understand (per Wikipedia [0]) Microsoft invented XMLHttpRequest in 1999 and nothing we now consider Ajax could really exist before that.<p>[0] <a href="https:&#x2F;&#x2F;en.m.wikipedia.org&#x2F;wiki&#x2F;XMLHttpRequest" rel="nofollow">https:&#x2F;&#x2F;en.m.wikipedia.org&#x2F;wiki&#x2F;XMLHttpRequest</a>