Starting a new startup/web application, how to choose a hosting provider? [closed]

Question

When creating a new startup related to a web application, how to choose a hosting provider ?

Assuming the code of the web application is oriented DDDD (Distributed Domain Driven Development) to handle large deployment scenario, the idea is to avoid too much cost for hosting.

Basically, the launch of the web app, with its very users will be able to fit on a "single" box (DB + APP), maybe two for redundancy. Eventually the apps will grows progressively to more and more users (I hope:)). How can I choose wisely the hosting ?

Today, I see three options :

• hosting ourself : not actually an option today as it requires a lot of administrative skills and related task
• hosting on virtual/dedicated servers : maybe a good options as virtual dedicated hosting is quite cheap, but I fear this will quickly limit us in term of scalability
• hosting on cloud (amazon or azure) : probably the best option in the long term, but with a higher cost to start (having to adapt a bit the application, cost of instances)

Does anybody have feedback/advise about such requirements ?

PS: FYI, the web apps will probably be written with ASP.NET MVC as web framework, and Ncqrs+NServiceBus to target the DDDD pattern in a CQRS style

Edit: as a backend, MongoDB is today our probable choice, as NoSQL is marrying well with event-sourcing + CQRS (no need for joins, etc.). However, finding VPS with asp.net AND mongodb can be challenging. I may have to use some traditional RDBMS found on all providers (MS SQL SErver or MySQL)