/Data-Transfer-Objects" target="_blank"> Data Transfer Object</a> (DTO) as parameter (if needed), uses domain objects to perform some specific business logic and returns a DTO back to the presentation layer (if needed).</em></p>

<p>I&#39;m creating the first application service, <strong>TaskAppService</strong>,&nbsp;into the <strong>.Application</strong> project to perform task related application logic. First, I wanted to define an interface for the app service:</p>

<pre lang="cs">
public interface ITask