Setting up the env. for a small web development team working remotely

We are a small web development start-up, we are trying to set everything up to allow us to work remotely on many projects.

We have decided to use Bitbucket for team collaboration, however we think that having a cloud server linked to Bitbucket to allow us to host apps and websites we are creating will be the best choice.

The question is : which cloud hosting services,
1. will be affordable for a start-up
2. will be easily linked to bitbucket
3. will allow several domaines for hosting (many applications).
4. will support applications build on several languages (php frameworks, js frameworks etc) and mobile platforms

Thanks.
Beni