If you want to evaluate the new functionality and features introduced in version 8 before performing the upgrade, use the Evaluation installation. This way you can quickly install all product’s components on a single computer without having to spend your time on a detailed configuration.
The Evaluation Installation installs the Microsoft SQL Server 2017 Express,
INFO: In order to avoid affecting your production servers, we recommend that you perform the Evaluation Installation on a separate computer dedicated to testing, or on a virtual machine.
INFO: For details and instructions, see Evaluation Installation.