Oh boy did you miss something in the 90s! It was call active pages (or some bullshit, I have tried to block it from my memory) and it made Internet Explorer the king of browsers and still locks in a lot of government agencies and business from upgrading their infrastructure, because they don't want to lose or have to pay to redevelop "critical" applications to their daily work.
ASP was programmed using VBScript (and actually extensible - it used Active Scripting, so you could also do JS, and third parties added support for e.g. Perl). And, since it was server-side tech, and very low-level at that, it didn't care what browser rendered the output.
I think this was a reference to ActiveX. Although most ActiveX controls weren't written in VB, either, even though you could do it - the resulting control was just too large to download, because you had to include ~2 Mb of VB runtime (remember, we're talking about the time back when dialup was still incredibly common - and 2 Mb takes 5 minutes to download on 56k). Mostly it was done in VC++ with ATL.
