No previous works have focused on the topic of inventory reduction and optimization to the extent that this one does. Spare Parts Inventory Management: A Complete Guide to Sparesology™ by Philip Slater covers the whole part's life cycle, from initial purchase to final disposal, and addresses issues throughout, including maintenance, repair, and overhaul (MRO). The author, Phillip Slater, was described in a recent podcast as "truly one of the leaders in the MRO information segment."

Sparesology is a term coined by Slater to describe the discipline of optimizing the physical, financial, and human resource management processes of spare parts inventory management. Sparesology is much more than just inventory optimization. It involves an understanding of the complete "ecosystem," within which the spare parts inventory is managed, and seeks to ensure that all of the factors influencing this management work together to achieve an organization's goals.