for a friend I put together an easy to manage Digital Signage using a Raspberry Pi (3+ and up) which now became kind of a project. It is called Raspisignage and you can find it on Github. It can be used as a client, server or both. The server base is a wordpress installation with Foyer plugin which is really nice for DS.
It can also be used as an easy way to install Arch Linux on a Raspberry Pi.