"A value stream is a set of actions needed to bring a product to an organization's customers." (Andrew Pham et al, "From Business Strategy to Information Technology Roadmap", 2016)
"A value stream is a sequence of activities needed to design, produce and provide a specific service and along which information, material and value flow. A value chain is a set of linked activities that transform inputs into outputs that in turn add to at least one of the ecological, societal or economic bottom lines and help create competitive advantages. Linked to Six Sigma and Lean methodologies the goal is to create sustainable competitive advantages." (Rick Edgeman, "Lean and Six Sigma Innovation and Design", Encyclopedia of Information Science and Technology, Fourth Edition, 2018)
"Value Streams represent the series of steps that an organization uses to build Solutions that provide a continuous flow of value to a Customer. " (Dean Leffingwell, "SAFe 4.5 Reference Guide: Scaled Agile Framework for Lean Enterprises" 2nd Ed., 2018)
"A sequence of processes through which a product follows all the steps necessary for transformation and delivery to the customer." (Sorinel Căpușneanu et al, "Throughput Accounting: Decisional Informational Support for Optimizing Entity Profit", 2019)
"The set of all steps from the start of value creation until the delivery of the end result to customer." (Semra Birgün & Zeynep Altan, "A Managerial Perspective for the Software Development Process: Achieving Software Product Quality by the Theory of Constraints", 2019)
"All activities, both value added and non value added, required to bring a product from raw material into the hands of the customer, a customer requirement from order to delivery, and a design from concept to launch. Value stream improvement usually begins at the door-to-door level within a facility, and then expands outward to eventually encompass the full value stream." (Lean Enterprise Institute)
"An operating unit that controls one or more production flows." (Microsoft, "Dynamics for Finance and Operations Glossary")
"The value stream is defined as the specific activities within a supply chain required to design, order and provide a specific product or service." (Gartner)
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