The 8.0.7600 version specifically indicates integration (not Windows 7 SP1). IE8 was the last Internet Explorer version for Windows XP.
If a site didn't have this tag, IE8 could render it in "Quirks Mode" (emulating older behaviors) or "IE7 Standards Mode." This backwards compatibility was crucial for enterprise environments, which relied heavily on internal legacy web apps. It established a precedent that Microsoft still follows today: balancing modern standards with enterprise legacy support. Internet Explorer 8 Version 8.0.7600
: This version introduced a multi-process architecture where the browser frame and individual tabs ran in separate processes. This prevented a single tab crash from taking down the entire browser window. Internet Explorer 8 Version 8.0.7600