One of the best ways to deploy your application along with your infrastructure (think cloudy cloud cloud here) is to add a Build Step to your CI environment to create an MSI or RPM.

The benefits of producing a package are numerous but here are the best:
+ You can use http to fetch and deploy your package - no stupid fileshares, ftp, git pulls etc
+ You can include the configuration templates of your application
+ If your orchestration breaks or is unavailable - all is not lost
+ Versions are really versioned - minimize silly deploy errors
+ Dependencies can be specified in the package for all to see

NOTE WELL - I said configuration template - don't put your configuration values in your package, that's dumb.

So what does it look like?

package { "Application.msi":
 ensure          => installed,
 provider        => "windows",
 source          => "http://web.site/puppetmodules/Application.msi",
}