Breaking the Tradeoffs Among Costs, Inventory, and Service

By  Aaron Brown Jeff Gell Elfrun von Koeller, and Jeff Wray
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Working in collaboration with the Grocery Manufacturers of America (GMA) and its membership, The Boston Consulting Group (BCG) conducted extensive benchmarking on topics related to effective supply-chain management. The resulting report, GMA Supply-Chain Benchmarking 2012: Unlocking the Hidden Value of Complexity Management and Collaboration, is based on a survey of 51 CPG manufacturers in the U.S., supplemented by interviews with 65 supply-chain executives. It also incorporates data that BCG gathered by polling 116 attendees at the February 2013 Supply Chain Conference, jointly hosted by the GMA and the FMI, including retailer views. Furthermore, it draws on BCG’s experience working with many of the leading CPG manufacturers and retailers in the U.S.

Since the Grocery Manufacturers Association’s (GMA’s) last supply-chain-logistics benchmarking survey in 2010, manufacturers of consumer packaged goods (CPG) have continued to face challenging economic headwinds. Many have responded by intensifying their focus on cutting costs and optimizing working capital, but this avenue to superior performance will at some point reach its natural end. And while some CPG manufacturers have successfully balanced lower costs with improved service, businesses on average have suffered slight drops in service levels.

Given these factors, it is time to go beyond traditional cost-cutting and find the answer to a different question: How can CPG manufacturers unlock additional value? This report, the eighth in the GMA’s benchmarking series focused on manufacturers’ outbound-supply-chain logistics, points the way forward.

There are still significant opportunities for nearly all companies to improve their supply-chain performance. Our analysis indicates that traditional assumptions regarding tradeoffs among costs, inventory, and service don’t always hold true. We found that higher inventory does not always equate to better service, and scale does not automatically lead to lower costs. (See “Questioning Conventional Wisdom.”) Instead, the winners manage the tradeoff between cost and service by focusing on less utilized, customer-centric levers such as complexity management and collaboration with trading partners .

Questioning Conventional Wisdom

Manufacturers should challenge conventional wisdom, particularly bearing in mind that the data we collected revealed several surprises:

  • There is no consistent observable relationship between cost and service levels. Some companies have managed to balance lower costs with higher levels of service, while others fare poorly at both.
  • There is no direct relationship between scale and costs for outbound logistics. This counterintuitive effect could be driven by a few factors. As organizations grow, the organizational and portfolio complexity typically increases, which can erode the gains from scale. Companies also often grow in ways that do not allow scale to be created in specific functions, such as by expanding into new categories, channels, or locations.
  • Higher inventory levels do not automatically drive higher service levels. In fact, no consistent correlation between inventory and case fill rate is apparent in the data. Just adding inventory to drive service levels is not a silver bullet. Improving service levels requires advanced planning and replenishment systems that allow companies to make sure that the right SKU is in the right location at the right time.

This three-part report builds on the GMA’s 20 years of supply-chain-benchmarking experience and related publications but differs from its predecessors in three key ways:

Here, we outline the key findings of our study, primarily focusing on companies using warehouse-based supply chains.

Authors

Managing Director & Partner

Aaron Brown

Managing Director & Partner
Chicago

Managing Director & Senior Partner

Jeff Gell

Managing Director & Senior Partner
Chicago

Managing Director & Senior Partner

Elfrun von Koeller

Managing Director & Senior Partner
Denver

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