The solution's deployment can be done in-house if you have experienced people who can deploy it. 

It took us 20 minutes to deploy the solution. We need 50 people to deploy and maintain the solution.

Visual Studio Team System can be deployed in-house. 

Our in-house team handled the implementation. The first time we deployed it, three people were involved in the process. Maintenance is not required for this solution and we have one system administrator.

We have an in-house team for deployment and maintenance.

Installation can be done with the help of the technical team.

The size of the team should be the same as that which we used, three to four people, consisting of managers. We have one IT manager.