In advertising, BOFu stands for Bottom Of Funnel.
Bottom Of Funnel (BOFu) is the final stage in the sales funnel where marketers are ready to make contact and go for a sale. At this stage, leads have identified themselves with the company and are ready to make a purchase.
This is when the sales team makes its effort to further facilitate the purchase decision, such as creating demos, webinars, and events.
Similarly, acronyms like TOFu and MOFu also relate to different points in the buyer journey.