Depending on your environment size, complexity, and needs, you can choose from different deployment methods to migrate to Windows 10 or Windows Server 2019. The most popular methods are in-place upgrade, wipe and load, and provisioning. An in-place upgrade preserves existing settings, applications, and data while replacing the old operating system with the new one. Tools such as the Windows 10 Setup or the Windows Server Installation Wizard can be used for this method. Wipe and load involves erasing the existing operating system and installing the new one from scratch; tools such as the Windows Deployment Services (WDS) or the Microsoft Deployment Toolkit (MDT) can be used for this method. Provisioning applies a configuration package to an existing Windows 10 device to customize its settings, applications, and policies; tools such as the Windows Configuration Designer or the Intune portal can be used for this method. Each of these methods is suitable for specific devices based on their requirements.