How to deliver images effectively using asp.net

Question

My asp.net application creates, stores in memory and shows images to user. Standard HttpHandler gets thread from pool to deliver each image. I think it's not effectively. Can asp.net deliver images more effectively than HttpHandler?

Upd: images are temporary. We store it during 1 hour.

Answer 1

IIS serving the images from disk it the most efficient not sure about effective, as well as using a CDN if possible.

Answer 2

For a heavy loaded/visited site, it make sense to put it as file system