A landing page is a website page containing a form that is used for lead generation. This page revolves around a marketing offer, such as an ebook or a webinar, and serves to capture visitor information in exchange for the valuable offer. Landing pages are the gatekeepers of the conversion path and are what separates a website visitor from becoming a lead.
A smart inbound marketer will create landing pages that appeal to different personae (plural for persona) at various stages of the buying process. A hefty endeavor no doubt, but one that pays off in spades.