Generally speaking. Microsoft technologies are good as load is low. For instance, you can create an Ecommerce site using ASP, but its performance drops rapidly as the hit becomes high. In such a case, it is very difficult to expand your server's ability. In English, it is said to lack scalability. I have ever asked about 5 Chinese IT professionals, one of them gave me the correct answer. I learnt this thing from him.
I hope all the IT friends can understand this word now.