A click funnel is a series of dedicated pages that guides a potential customers through a step by step process to a desired outcome. Example:
One-click upsells are a popular element of such a funnel, because it increases the revenue per sale (RPS).
Here is the entire sequence in one image:
A ‘Click Funnel’ is essentially the same thing as a sales funnel.
The Free Plus Shipping funnel is a version of the click funnel.
The industry leaders are ClickFunnels, Kajabi, and LeadPages, though you can also create landing pages with most email marketing platforms, such as ActiveCampaign and MailChimp. For Woo-Commerce you can use CartFlows.