For United/Optum, hospital services are not seen as something that adds much breadth to the top of the funnel or that draws people into the funnel—certainly not enough to justify Optum taking on the high fixed costs and poor pricing of inpatient care. Rather, hospitals are an additional interaction within the funnel that can be accomplished through partnerships rather than ownership, according to Wichmann. Those partnerships, he says, “will occur in markets where there is maybe fewer assets for us to accumulate and build from."
In marketing automation, Ryan Deiss, co-founder of Digital Marketer, often describes the sales funnel as a multi-step, multi-modality process that moves prospective browsers into buyers. It's multi-stepped because lots must occur between the time that a prospect is aware enough to enter your funnel, to the time when they take action and successfully complete a purchase. 
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