I ran my (slightly profitable) side project on mono and ASP.NET MVC2 for about 5 months before switching to a Windows server on EC2. Best thing I ever did ...

I ran my (slightly profitable) side project on mono and ASP.NET MVC2 for about 5 months before switching to a Windows server on EC2. Best thing I ever did ... sure it costs 3x what I was paying for a VPS, but it has been rock solid compared to a number of resource leak issues with Mono, and the fact that I can admin a windows box with googling everything I need to do. If you are developing a for-profit venture and the cost of deploying on Windows vs Linux is a breaking point for a .NET project then I'd suggest you look at the business plan again and decide if it has enough profit in it.