Case Studies
In-depth breakdowns of the algorithms, data flywheels, and business decisions behind the companies our students want to work at, and the ones quietly redefining how entire industries run.
11+
Companies analysed
6
Industries covered
30+
ML & data patterns
Hover to fan out · click to read
Mentor Picks
Most Popular22 minOpenAI
Inside OpenAI's path from research lab to $3B ARR platform.
“Forget the model leaderboards. OpenAI's real moat is a three-year head start on user feedback data and an enterprise sales motion nobody in research was prepared for.”
Dr. Vikram Subramanian
Applied AI Lead, 15+ yrs
Top Pick19 minNetflix
Netflix's recommender: the $1B algorithm hiding in plain sight.
“If you want to understand modern data science as a business function, Netflix is the single best teaching example on the planet.”
Emma Roberts
Data Science Advisor, ex-Deliveroo
Trending18 minUber
Uber's surge pricing: a masterclass in real-time ML economics.
“Surge pricing gets the headlines, but the real engineering story is how Uber reconciles thousands of conflicting optimisation goals in under 200 milliseconds.”
Anjali Raghunath
Analytics Strategy Mentor
The Library
11 of 11 studies
OpenAI
22 minInside OpenAI's path from research lab to $3B ARR platform.
Netflix
19 minNetflix's recommender: the $1B algorithm hiding in plain sight.
Uber
18 minUber's surge pricing: a masterclass in real-time ML economics.
Spotify
17 minSpotify's discovery engine, how Wrapped became a growth loop.
Airbnb
16 minAirbnb's smart pricing: the ML that trains hosts to earn more.
Stripe
18 minStripe Radar: fraud detection as a developer primitive.
Tesla
21 minTesla's data advantage, the flywheel Detroit can't replicate.
Amazon
20 minAmazon's invisible AI, from product recs to last-mile routing.
Starbucks
14 minStarbucks Rewards: the loyalty programme that runs on data.
Nike
15 minNike's D2C pivot and the data work that held it together.
Zara
17 minZara's two-week design cycle, the original data-driven supply chain.
Alumni Favourites
Each of these Wills alumni can trace a specific offer or promotion back to a framework they first saw broken down in a case study.
Rahul Desai
Agentic AI
Before
Backend Engineer, Paytm
After
AI Engineer, Razorpay
“Breaking down how OpenAI productised RLHF at scale completely changed how I designed my capstone. I went into the Razorpay interviews talking about retrieval trade-offs the way the case study framed them.”
Ananya Krishnan
Data Analytics
Before
Excel Analyst, Mid-size SaaS
After
Data Analyst, Flipkart
“The Netflix case study on experimentation velocity rewired how I think about A/B tests. I built my final dashboard around the same guardrail metric patterns they use internally.”
Arjun Mehta
Data Science
Before
ML Intern, Early-stage startup
After
ML Platform Engineer, PhonePe
“Uber's surge model explained as three stacked models instead of one magic pricing engine is exactly the mental model I used to land my PhonePe interviews.”
Sophie Williams
AI Business Analytics
Before
BI Analyst, 4 yrs stuck
After
BI Manager, Deloitte UK
“The Starbucks loyalty breakdown gave me the exact narrative arc for a stakeholder pitch I had been struggling with for months. It was the turning point in my promotion conversation.”
Nitesh Gupta
Data Science
Before
Product Analyst, Swiggy
After
Data Science Lead, Swiggy
“Amazon's hierarchical forecasting case study directly shaped the approach I proposed internally. It got me the lead role and an actual roadmap to execute.”
James Thornton
Data Science
Before
Software Developer, 6 yrs
After
Senior Data Engineer, HSBC
“The Stripe Radar deep-dive was the first case study that treated fraud ML as a systems problem, not a modelling one. That framing was the whole reason I pivoted into engineering-first data roles.”
Brand Explorer
AI & ML platforms
Data-driven consumer
Commerce & payments
Retail & brand
Frontier & hardware
Coming soon
Anthropic · Google DeepMind · Meta AI · Hugging Face · Shopify · Figma · Notion · Instagram · Razorpay · Swiggy
Apply what you learn
Our curriculum is built around the exact playbooks in these case studies, shipped by engineers and analysts who've worked at the companies we break down.
