Upstream
Principal direction of movement for customer orders which originate at point of demand or use, as well as other flows, such as return product movements, payments for purchases, etc. Opposite of downstream.
Related Links
Logistics Definition from Financial Times Lexicon
Supply Chain and Logistics – Supply Chain Management
Related Videos

Upstream vs Downstream

Fundamentals of upstream, midstream and downstream
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Upstream vs Downstream
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Fundamentals of upstream, midstream and downstream