--- title: How Spreadsheets Quietly Cost Supply Chains Millions description: A simulation comparing spreadsheet-based supply chain planning against a connected platform (SupPlan) using a fictional fashion retailer, SupFashion. In the... canonical: https://daily.dev/posts/how-spreadsheets-quietly-cost-supply-chains-millions-glq3fcapg twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: How Spreadsheets Quietly Cost Supply Chains Millions | daily.dev og:description: A simulation comparing spreadsheet-based supply chain planning against a connected platform (SupPlan) using a fictional fashion retailer, SupFashion. In the... og:url: https://daily.dev/posts/how-spreadsheets-quietly-cost-supply-chains-millions-glq3fcapg og:image: https://api.daily.dev/og/posts/glQ3FCapg.png og:image:alt: How Spreadsheets Quietly Cost Supply Chains Millions og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # How Spreadsheets Quietly Cost Supply Chains Millions **[Towards Data Science](https://daily.dev/sources/tds)** · 12 min read · 0 upvotes · 0 comments ## Summary A simulation comparing spreadsheet-based supply chain planning against a connected platform (SupPlan) using a fictional fashion retailer, SupFashion. In the spreadsheet scenario, a 50-unit forecast adjustment for a marketing campaign takes 14+ days to reach all planning teams, causing missed factory lead times and empty shelves. With the integrated platform, the same change cascades across demand, merchandising, supply, and distribution teams in a single working day, preserving the 52-day factory lead time and ensuring stores are stocked before the campaign starts. The author built SupPlan as an open-source simulation environment for testing integrated business planning algorithms, with plans to add distribution and financial modules. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [The Pulse of India’s Supply Chain: How Flipkart Plans for 500 Million Customers — Part 1](https://daily.dev/posts/the-pulse-of-india-s-supply-chain-how-flipkart-plans-for-500-million-customers-part-1-hxe7hr5gd) · Flipkart Tech · 0 upvotes · 0 comments - [Stop asking engineers how many machines they need](https://daily.dev/posts/stop-asking-engineers-how-many-machines-they-need-tbhfjrgb1) · LeadDev · 0 upvotes · 0 comments - [How Two Nights of After-Work Coding Cut Our Sprint Planning From Three Days to Half a Day](https://daily.dev/posts/how-two-nights-of-after-work-coding-cut-our-sprint-planning-from-three-days-to-half-a-day-bncr87hqy) · Medium · 0 upvotes · 0 comments - [Can AI Solve Failures in Your Supply Chain?](https://daily.dev/posts/can-ai-solve-failures-in-your-supply-chain--gdtsbilsr) · Towards Data Science · 1 upvotes · 0 comments - [The Race Against the Clock: Optimizing Supply Chain Capacity for Faster Deliveries — Part 1 \(Capacity Management Series\)](https://daily.dev/posts/the-race-against-the-clock-optimizing-supply-chain-capacity-for-faster-deliveries-part-1-capacit-yv1houimx) · Flipkart Tech · 0 upvotes · 0 comments --- Tags: [#supply-chain](https://daily.dev/tags/supply-chain) [View this post on daily.dev](https://daily.dev/posts/how-spreadsheets-quietly-cost-supply-chains-millions-glq3fcapg) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"How Spreadsheets Quietly Cost Supply Chains Millions","url":"https://daily.dev/posts/how-spreadsheets-quietly-cost-supply-chains-millions-glq3fcapg","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/how-spreadsheets-quietly-cost-supply-chains-millions-glq3fcapg"},"datePublished":"2026-04-27T14:26:01.865Z","dateModified":"2026-04-27T14:26:27.715Z","description":"A simulation comparing spreadsheet-based supply chain planning against a connected platform (SupPlan) using a fictional fashion retailer, SupFashion. 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