The Android Virtual Device Manager (AVD Manager) is an Android tool integrated in Android Studio to manage the Android virtual devices that will be executed in the Android emulator.
To open the AVD Manager from Android Studio, navigate to the menu Tools | Android | AVD Manager. You can also click on the shortcut from the toolbar. The AVD Manager displays the list of the existing virtual devices in the default tab Android Virtual Devices. Since we have not created any virtual device, initially the list should be empty. To create our first virtual device, click on the New button to open the configuration dialog: