Google uses a mix of languages for it's various purposes.



1. Orkut is in ASP.NET

2. Google's Help System is in Python

3. Definitely C/C++ for Searching

4. Google's real strength is in CSS & JavaScript

5. It uses AJAX to speed up what I think.



CGI is used at a lot of sites. PayPal(sister concern of EBay) uses it



Amazon uses CGI. Enter amazon.com/index.cgi to see yourself



And Python is a interpreted language as pointed out but it can be converted to native code & it can also call native code written using C++ (python code can also be called from C++).

Click to expand...