An introduction to an iterative Lean Marketing Cycle?

I believe in an iterative or Agile type of a process in sales and marketing. I think that the typical marketing funnel (Kill the Sales and Marketing Funnel) that sets the framework and deliverables at the start of a cycle is outdated. The primary reason is that it assumes that sales and marketing is a predictable process. The primary difference between the iterative process (Lean sales and Marketing) and a typical marketing funnel is that the iterative process assumes we are dealing with an unpredictable process.

Using an iterative process, such as PDCA an organization controls the mechanisms of entry and exit into the stages or cycles but allows for much broader definition of what happens within the cycles. We think more of a customer maturing during the process. I thought the following video could serve as a introduction to an iterative cycle used in Marketing with PDCA. Think of the beginning as a prospect entering your Lean Sales and Marketing Cycle through distributed data and information and the process of creating and sharing of information which turns into knowledge.

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This is why I believe the Future of Marketing is Lean