Pros and cons of having dedicated application pools over keeping web applications in one default app pool

Question

What are pros and cons of having dedicated application pools over keeping web applications in one default app pool?

Answer 1

I agree with Jason.

Also, you can designate different users (such as a Windows account) for different app pools. That enables setting up those users with different permissions in the database. That helps enhance security, and enables tracking which website/user is hitting the database, useful when tracing database performance issues.