What are singletons?

[jb-storms-media]

Difference between Singleton and Region

Quoting @artur: Singletons will replace regions. While looking back on past projects I investigated that regions where postly used like “single item” collections (e.g. for global configuration etc). the template feature was pretty useless as most of the time the rendering was on the client side. so regions will get removed from the core and will get replaced by “Singletons”.