SkiPresto.com is a demo site which uses a managed portal. The site is owned, hosted and managed by David Cuthill whose contact details can be found at the foot of the page.
You are welcome to register (or Login if you have already registered) and use the Social pages. This gives access to a series of Social Groups you can join. Rather like WhatsApp.
This site uses a database to populate the content on the pages.
It also allows multiple administrators to work simultaneously on the site.
There is a built-in membership database and each member can be granted multiple different Roles, and that permits them to steer to specific content pages and content upon a page.
The site has a public-facing aspect, and also content management for users who log in.
So far there is only one site. But the portal can be set up to contain multiple websites.