Summary of managed pipeline mode and integration mode of IIS7 application pool

These ASP. the NET module cannot only process ASP. NET web applications, such as ASP, PHP, or static HTML web pages. NET has become a part of IIS 7, so ASP, PHP, or static HTML web pages can also use Forms Authentication) or Output Cache and other ASP.. NET 2.0 (but the setting value of IIS 7 must be modified ). Because IIS 7 allows you to use ASP.. net api development and add modules, so ASP. NET web developers will be more likely to expand the functions of IIS 7 and website applications, and even can independently. NET Program for managing IIS 7 (for example, program-controlled IIS 7 to build a website or virtual directory)

Execution architecture diagram of IIS 7 (Architecture in managed channel mode)
Summary
IIS5 to IIS6 Improvements mainly include improvements to HTTP. sys.
The improvements from IIS6 to IIS7 mainly involve improvements to isapis.