Propensity to Buy Algorithms: Transforming Retail and Fashion with Data-Driven Insights

Propensity to buy algorithms are revolutionizing how businesses predict customer behavior, optimize marketing strategies, and drive growth.

Propensity to Buy Algorithms: Transforming Retail and Fashion with Data-Driven Insights
Photo by Eduardo Soares / Unsplash

By analyzing historical data, demographics, and customer interactions, these tools identify which shoppers are most likely to purchase specific products—a critical capability in competitive industries like retail and fashion. Let’s explore how these algorithms work, their real-world impact, and why they’re becoming indispensable for modern brands.

How propensity to buy algorithms work

These algorithms rely on machine learning and statistical models to analyze patterns in customer behavior.

For example, a customer’s purchase history, browsing habits, and responses to past promotions are combined to predict their likelihood of buying a new product.

Retailers like Amazon and Netflix have pioneered this approach, using advanced models to recommend products with uncanny accuracy. In fashion, brands apply similar techniques to forecast demand for seasonal collections or identify emerging trends.

Gartner highlights that 30% of digital commerce revenue growth by 2020 was driven by AI technologies, including propensity models.

Source Criteo

These tools process vast datasets—such as transaction records, social media engagement, and inventory levels—to generate actionable insights.

Real-World Applications and Case Studies

1.Targeted Marketing Campaigns

A McKinsey case study reveals how a global medtech company used propensity-to-buy analytics to prioritize leads for its maintenance contracts.

By analyzing customer data—such as equipment servicing history and purchasing behavior—the company increased sales by 15% while reducing marketing costs (source McKinsey).
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Here the link to an interesting article about "Propensity Models: Capillary’s Secret Sauce for Marketers to Predict Consumer Behavior" that explain how Capillary Technologies leveraged AI-driven models to help fashion brands segment customers based on shopping patterns, resulting in a 40% increase in customer.

2.Dynamic Pricing and Inventory Management

Advanced algorithms enable retailers to adjust real-time prices based on demand forecasts. For instance, a high-end shoe brand used predictive analytics to tailor discount levels for different customer groups, boosting revenues by 20% without sacrificing margins.

Gartner notes that AI-powered dynamic pricing models help businesses balance inventory levels, competitor pricing, and seasonal demand.

3.Personalized Customer Experiences

In fashion, Capillary’s AI-powered “audience filters” analyze billions of data points to predict when customers will likely lapse or make repeat purchases. By targeting shoppers with personalized offers—such as discounts on their preferred product categories—brands achieve 25% higher conversion rates.

Industry statistics

Nice to know to keep up to date on market trends

  • Market Growth: The advanced analytics market surpassed $1 billion in 2013, with Gartner identifying it as a top priority for 63% of organizations.
  • Adoption Rates: Inquiries about AI in digital commerce surged 350% from 2015 to 2016, reflecting rapid adoption.
  • Revenue Impact: Companies using propensity models report 20–30% higher sales and 15–20% lower marketing costs due to hyper-targeted campaigns.

The future of Propensity modeling

As AI evolves, these algorithms will become even more precise. McKinsey predicts that banks and retailers using AI-driven decision-making tools can boost customer lifetime value by 25% through personalized engagement.

Link: to the research Source: McKinsey

In fashion, integrating sustainability data into propensity models—such as tracking eco-conscious purchasing habits—will help brands align with shifting consumer values.

Advanced analytics and machine learning can classify customers into microsegments for targeted interventions.

Link: to the research Source: McKinsey

Gartner emphasizes that AI and machine learning will dominate investment priorities, enabling businesses to automate demand forecasting and inventory optimization processes.

Practical applications today using QR Codes in the Retail Industry

1.Personalized discounts via QR code scans

Trigger time-sensitive offers based on in-store behavior.

  • QR codes placed on products or shelves link to discounts when scanned.
  • Propensity models analyze scan data (e.g., dwell time, product category interest) to predict which customers will most likely convert.

Case study Tesco

Tesco’s "virtual grocery shelves" in subway stations used QR codes to drive a 130% increase in online sales by targeting commuters with personalized offers.
Source: "Consumer Attitudes Towards Using QR Codes in a Retail Setting"
red and white open neon signage
Photo by Samuel Regan-Asante / Unsplash

2.In-Store Product Recommendations via mobile application

Suggest complementary items when customers scan QR codes.

  • Customers scan QR codes on products to access reviews or sizing info.
  • Propensity models use scan history + purchase data to recommend items (e.g., "Customers who bought this jacket also purchased these gloves").

Case study Amazon

Powered by collaborative filtering, Amazon's recommendation engine drives 35% of total sales through cross-sell opportunities.
Source: "AI-Driven Propensity Modeling to Predict Next Purchase and Boost Customer Loyalty"
two boxes of amazon are stacked on top of each other
Photo by ANIRUDH / Unsplash

3.Loyalty Program Tier Upgrades

Predict which customers are close to reaching VIP status.

  • Analyze purchase frequency, spend, and engagement with QR-linked promotions.
  • Target "on-the-fence" customers with QR-exclusive bonuses (e.g., double points for scans).

Case study Starbucks

Starbucks Rewards uses predictive analytics to boost retention, with members accounting for 53% of U.S. sales due to tailored offers.
Source: "AI-Driven Propensity Modeling to Predict Next Purchase and Boost Customer Loyalty"
a starbucks sign hanging from the side of a building
Photo by June Andrei George / Unsplash

4.Event-Driven Flash Sales

Time-limited promotions using regional QR codes.

  • Deploy QR codes in specific locations (e.g., near stadiums before a game).
  • Propensity models forecast demand for event-related merchandise (e.g., team jerseys) and trigger flash sales.

Case study IKEA

IKEA’s AI-driven models factor in local events (e.g., holidays) to optimize regional inventory, reducing stockouts by 20%.
Source: "Predictive Analytics in Retail: Key Use Cases and Emerging Trends"
yellow and black building under white clouds during daytime
Photo by Jueun Song / Unsplash

5.Sustainability-Focused Campaigns

Engage eco-conscious shoppers via QR-linked incentives.

  • QR codes on product tags share sustainability metrics (e.g., carbon footprint).
  • Models identify customers with high "green propensity" to offer recycling rewards (e.g., scan QR code after returning packaging for a discount).

Case study H&M

H&M’s AI-powered "Looop" program uses customer data to promote garment recycling, increasing participation by 40% through targeted QR campaigns.
Source: "Predictive Analytics in Retail: Key Use Cases and Emerging Trends"

Insights about the case studies above

Retailers bridge online and offline behaviour by combining QR code tracking with predictive analyticsthe , turning anonymous browsing into actionable insights.

  • Data-Driven Precision: McKinsey reports that AI-driven personalization can boost 10–15%.
  • Cost Efficiency: Gartner notes dynamic QR campaigns reduce marketing waste by 20–30% through hyper-targeting.
  • Customer Retention: Brands using propensity models see 25–40% higher retention by addressing churn risks early.

From boosting sales with dynamic pricing to retaining customers through personalized offers, these tools deliver measurable results.

With giants like Gartner and McKinsey highlighting their transformative potential, businesses that adopt these technologies today will lead tomorrow's markets.

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