If you ask any media planner or buyer what the term efficiency means they will tell you that it is the way to determine relative value of different media and is usually defined as the cost per thousand impressions, CPM, of the media vehicle or buy. This results in their decisions on which media to buy being made strictly on costs. That definition is dead wrong and leads to overemphasis on a surrogate measurement that may not correlate with sales results. Something is efficient if it is capable of producing the desired results without wasting materials, time, or energy. Can the vehicle deliver sales at a lower cost than other options? There is a cost/benefit perspective inherent in that definition. Nowhere in this description is there any indication that trying to get as many people as possible to see your efforts compared to other choices is the goal.
Making decisions based exclusively on audience cost of a media vehicle can waste tremendous resources. One of the sayings I’m known for is that the cheapest media is the most expensive media you might buy if it does not work.
Today we have so many tools at our disposal to apply metrics other than CPM to define efficiency. We also have ways to insert intermediate steps in the purchase consideration path to measure whether we are on the right track.
Are your media buyers looking at data other than audience delivery to track your progress? Are they looking at your Google Analytics data? Are they making adjustments based on how well their buy is driving traffic? Even if your ultimate goal is sales at retail there are intermediate steps that can be taken to identify what is working and what is not.
The secret is predicting in the planning stage what the potential return on each vehicle will be based on syndicated data, prior transactional data, behavioral modeling, etc. During the execution stage, make sure you align an inbound intermediate mechanism for tracking. You can use unique landing pages or promo codes, statistical modeling on web traffic, coupon downloads, social media actions or good old fashioned phone calls. A holistic look at this activity can prove helpful in making the proper optimizations to your campaign. Now that’s efficiency.