Product merchandising, explained for CPG

What product merchandising is

Product merchandising is the work of deciding how a product is presented to a shopper in a store: which items are carried, where they sit, at what price, with what signage, and in what quantity. It is the last mile between a commercial plan and a purchase, and it is where most plans quietly stop working.

The distinction worth holding is between merchandising and marketing. Marketing decides what a shopper thinks about the brand before they arrive. Product merchandising decides what happens in the four seconds they spend looking at the shelf. A category can win the first and lose the second, and the sales figure will not tell you which happened.

Four levers do nearly all the work:

Primary and secondary placement

Every item has a home on the shelf. That is its primary placement, defined by the planogram, and it is where a shopper who is looking for the item will find it.

Secondary placement is everything else: a display at the end of an aisle, a bin at the front, a clip strip hanging in an adjacent category, a pallet drop in the seasonal area. It is where a shopper who was not looking for the item encounters it anyway.

The commercial difference between the two is large and frequently underestimated. Primary placement serves demand that already exists. Secondary placement creates demand from shoppers who had not planned the purchase, which is why secondary placement is the thing brands pay for and why it is scarce.

The Walmart end cap, and why it is a specific object

The end cap is the display at the end of a gondola aisle, facing the main traffic path. It is the highest-visibility secondary placement in a conventional grocery or mass store, because every shopper travelling the racetrack passes it whether or not they enter the aisle.

A Walmart end cap is a particular version of this with its own planning vocabulary and its own calendar, and the reason brand teams talk about it as a distinct thing rather than as a generic display is that at that scale, an end cap programme is a supply commitment before it is a marketing one. Winning the space and then failing to serve it is worse than not winning it: the display runs empty in front of the highest-traffic position in the store.

The operational checks that decide whether an end cap works are unglamorous:

• Units the display physically holds, against expected weekly rate of sale
• Whether resupply happens mid-week or only on the normal delivery
• Who builds and maintains it, store labour or a merchandising service
• What happens to the primary shelf position while the display runs

That last one is the mistake that recurs. An item on display frequently goes out of stock on its normal shelf, because replenishment is pulling against a baseline that never anticipated the display. A shopper who does not see the display and goes to the aisle finds a hole, and the item loses a sale it would have made without any promotion at all.

Reading merchandising in the data

Merchandising changes are usually invisible in a sales file, which is why they are one of the most common causes of a sales movement that nobody can explain.

Consider an illustrative item at Sunrise Market:

Without the third column, week 5 looks like a demand surge and week 7 looks like a collapse, and both readings are wrong. The lift was placement, not demand, and the post-display level being slightly below the pre-display level is the normal pattern rather than a warning sign.

The practical rule: a merchandising calendar is a required input to any sales analysis in this channel. Placement changes, planogram resets and display periods explain a large share of the week-to-week movement that otherwise gets attributed to price, weather or competitive activity. Analysis without that calendar is guessing with arithmetic attached.

Product merchandising also interacts with shopper marketing, which funds much of the secondary placement described above, and the two are planned together far more often than they are measured together.

The short version

• Product merchandising is assortment, placement, pricing and presentation: how the product meets the shopper in store.
• Primary placement serves existing demand; secondary placement creates unplanned purchases, which is why it is paid for and scarce.
• A Walmart end cap is a supply commitment before it is a marketing one, and an empty display at the highest-traffic position is worse than no display.
• Items on display frequently go out of stock on their normal shelf, because replenishment never anticipated the placement.
• Merchandising changes are invisible in a sales file, so a placement calendar is a required input to any credible reading of the numbers.