title: What does "in-house application" mean? How to translate it?
body: <p>I have problem with translating this sentence:</p>
  
  <p>"Running in-house systems means that you can
  leverage your existing security system for purposes of authentication, authorization, and so forth"  - from Pro C# 2010 and the .NET 4 Platform</p>
  
  <p>Google translate doesn't help me with this.</p>
  
  <p>I don't want to translate it to my language, but I want explanation, the best with some examples.</p>