Fashion Demand and Assortment Planning

This application focuses on using data-driven models to decide what fashion products to design, how many to produce, and where and when to stock them. It connects design, merchandising, and inventory planning by forecasting demand at granular levels (style, size, color, store/region) and informing the optimal product mix—known as assortment planning. These systems learn from historical sales, trends, customer behavior, and external signals (e.g., seasonality, events) to reduce guesswork in design and buying decisions. It matters because fashion is highly volatile, with short product lifecycles, strong trend sensitivity, and high risk of overproduction and markdowns. Better demand and assortment planning increases full‑price sell‑through, cuts waste, and supports sustainability goals by aligning production with real demand. It also underpins more personalized shopping experiences, as the right products are available in the right channels, boosting both revenue and customer satisfaction while lowering inventory and operational costs.

The Problem

Granular fashion demand forecasting driving optimal assortments & allocation

Organizations face these key challenges:

1

Frequent end-of-season markdowns and excess inventory from wrong buys

2

Stockouts on winning styles/sizes/colors while slow movers occupy space

3

Merchants rely on spreadsheets and intuition with inconsistent results

4

Late trend shifts (weather/social) cause missed demand spikes and rebalancing chaos

Impact When Solved

More accurate SKU-level forecastsReduced markdowns by 25%Optimized inventory allocation

The Shift

Before AI~85% Manual

Human Does

  • Creating spreadsheets for forecasts
  • Adjusting allocations based on intuition
  • Replenishing stock using heuristics

Automation

  • Basic historical sales analysis
  • Manual trend identification
With AI~75% Automated

Human Does

  • Final approvals on inventory decisions
  • Monitoring market trends
  • Handling edge cases in allocations

AI Handles

  • Predicting demand based on external signals
  • Optimizing assortment and allocation decisions
  • Scenario planning for promotions and trends
  • Quantifying uncertainty in forecasts

Solution Spectrum

Four implementation paths from quick automation wins to enterprise-grade platforms. Choose based on your timeline, budget, and team capacity.

1

Quick Win

AutoML Sell-Through Forecaster

Typical Timeline:Days

A fast, practical forecast for demand or sell-through at a manageable granularity (e.g., category-region-week or style-week) using existing sales and product metadata. It produces baseline forecasts and simple what-if adjustments for promotions/seasonality to support early-line planning and open-to-buy targets. Best for proving value and establishing forecasting KPIs without replatforming planning systems.

Architecture

Rendering architecture...

Key Challenges

  • Data sparsity and discontinuities (new styles, short life cycles)
  • Noisy demand due to stockouts and lost sales not captured in POS
  • Choosing the right forecasting granularity to avoid overfitting
  • Calendar alignment (retail weeks, seasons, drops, promo periods)

Vendors at This Level

AllbirdsEverlaneGymshark

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