SP2 finalized the object that would eventually become the backbone of AJAX (Asynchronous JavaScript and XML). In 2000, few noticed. But when Gmail and Google Maps launched in 2004, they were piggybacking on technology that reached maturity in IE 5.0 SP2. Netscape 6 (released in 2000) had no such object.
Microsoft introduced HTML Components (HTCs) in SP2—a way to encapsulate script and style into a reusable file. It was weird, proprietary, and brilliant. Entire intranets were built on HTCs that died the moment Firefox rose to power. But for three years, SP2 made web apps feel like desktop apps. The Dark Side: The IE Monoculture Begins With IE 5.0 SP2, the web stopped being a multi-vendor ecosystem. By Q4 2000, IE’s market share crossed 70% for the first time. This service pack was so stable, so fast (for the time), that corporate IT departments standardized on it immediately. microsoft internet explorer 5.0sp2
For a brief, shining moment in the summer of 2000, you could load a heavy portal page on a Pentium III with 64MB of RAM, and IE 5.0 SP2 wouldn’t stutter. It wouldn't crash. It would just work. SP2 finalized the object that would eventually become
Microsoft had learned a brutal lesson from IE 4.0 SP1: never wait too long to patch. 5.0 SP2 established the "annual service pack" cadence that Windows would follow for decades. Furthermore, 5.0 SP2 introduced the —the blue-and-yellow globe interface that millions of users would come to dread during the Blaster Worm era. The Quiet Revolution: DHTML and XMLHTTP To web developers, IE 5.0 SP2 was the real turning point. While the public saw "stability," developers saw the future. Netscape 6 (released in 2000) had no such object
Because and the first version to be fully baked into Windows Me (Millennium Edition).