As the development phase of your project starts, you need ability to build your final solution including customization (Creating deployable package) and deploy to test environment for validation and testing. Building solution manually every time, developer change something in the source code is time consuming and is not worth specially when there is simple and easy way to automate. In large implementation projects, when you have multiple team working on multiple features, this build automation becomes more critical. In this section we will go through the automated build and testing process of Dynamics 365 for Finance and Operations, Enterprise edition.