I think it's specifically "tech", the shortened form, that refers to websites and apps in today's usage. "Technology", the full word includes medical advances,

I think it's specifically "tech", the shortened form, that refers to websites and apps in today's usage. "Technology", the full word includes medical advances, aerospace, innovative construction materials, solar panels, whatever. What really drives me up the wall is when people call a library or a software framework or platform "a technology" (countable noun) in software. Like "Silverlight technology". I'm like "no, it's still a minor facet of information technology or computing technology, it's not a technology on its own".