One of the important aspects of The Kanban Method is Class of Service (CoS). CoS is a risk categorization mechanism for any work item. We identify 4 Classes of Service – Standard, Fixed Date, Expedite, and Intangibles – depending on customer expectation, value and loss of business value identified as cost of delay. For this blog, cards that are classified as Intangible CoS will be referred to as “Intangibles”.