I've got a client with an MVC v1 (.NET) application running on a micro instance. On this instance, I've got .NET, IIS 7.5, and MS SQL Server 2008 running to handle the application. The client has reported that it is taking nearly 10 seconds to process each request. Even loading the initial login page takes about that long, then logging in takes that long, etc etc.

The currently running instance specs are as follows:

• 615 MB RAM
• Intel Xenon CPU E5430 @ 2.66GHz 2.78 GHz
• 64-Bit

Is the memory availability the issue? or is it the processing power?

I forsee two options:

1. Change to a larget instance
2. Set up a 2-tier architecture with two micro instances

Which of these will give the application better performance?

Thanks in advance.