Server cost for smartphone app with web service
- by FrankieA
Hello, I am working on a smartphone application that will require a backend web service - but I have absolutely clueless to how much it will cost.
Web Service will handle:
 - login of users
 - cataloging of our user base
 - holding minimal profile information for users (the only binary data is a display picture which will be < 20k each)
 - performing some very minor calculation/algorithm before return results
 - All the above will be communicated to server from a smartphone (iPhone/BlackBerry/Android)  
Bandwidth Requirements:
 - We want to handle up to 10k users throughout the day.
 - I predict 10k * 50 HTTP requests a day = 500,000 requests a day * 30 = 15 million requests a month
Space Requirements:
 - Data will be in SQL database.
 - I predict 1MB/user * 10k = 10GB + overhead. In other words - space is not a big issue.  
Software Requirements: (unless someone knows an alternative)
 - Windows Server 2008 + IIS
 - MSFT SQL Server  
Note: This is 100% new to me, so please hit me with all you got. Do I need Windows Server or are there alternative? Is it better to get multiple cheap servers to distribute load? Will Amazon S3 work for me? How about Windows Azure?
Thank you!!