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The "X" in the acronym comes from XMLHttpRequest, an API that was originally provided by Internet Explorer to enable fetching XML in Outlook Web Access. It was
by JimDabell 7y ago
The "X" in the acronym comes from XMLHttpRequest, an API that was originally provided by Internet Explorer to enable fetching XML in Outlook Web Access. It wasn't until later that fetching JSON with it became popular – XMLHttpRequest predates JSON by a few years.