How to create a redirect page using a SharePoint news link
A redirect web page is a technique used to automatically send a website user from one URL to another URL. In SharePoint this process can be achieved at site collection level with a site swap as explained in here, or temporarily using a SharePoint news link.
A SharePoint News link is a hyperlink that points to a news article or post on a SharePoint site or available globally in the web, however it can be also used as a redirect page.