So-What Question

How does Olist’s Sao Paulo-centered seller network affect delivery speed, freight cost, and national reach?

This question turns geolocation from a map exercise into a business story. The evidence below shows that Olist demand is national, but seller supply is much more concentrated in Sao Paulo. That creates reach, but also distance, cost, and customer-experience tradeoffs.

Load And Prepare Data

Coordinate coverage after joining business tables to ZIP-prefix centroids
metric value
Customer ZIP coverage 99.7%
Seller ZIP coverage 99.8%
Item rows with both customer and seller coordinates 99.5%

Chart 1: Supply Is More Sao Paulo-Centered Than Demand

What this says: customer demand is concentrated in Sao Paulo, but seller supply is even more concentrated. That imbalance is the root of the logistics story.

Chart 2: Olist Is A National Marketplace, Not Mostly Local Commerce

What this says: the typical customer-seller leg is hundreds of kilometers. Local fulfillment exists, but it is not the dominant pattern.

Chart 3: Distance Creates Real Cost And Speed Pressure

What this says: longer routes are not just geographically interesting. They are slower and more expensive.

Chart 4: The Largest Lanes Radiate Out From Sao Paulo

What this says: the network is anchored in SP. The biggest lanes are SP to SP and SP to major nearby states.

Chart 5: North And Northeast Routes Are The Long-Distance Challenge

What this says: the long-distance problem is specific enough to act on. It is mostly SP sellers shipping to North/Northeast destinations.

Leaflet Map: Demand And Supply Hubs

What this says: the largest seller hubs are tightly clustered in Sao Paulo, while demand is spread across more cities. Use the map to introduce the geography, then use the bar charts to prove the operating impact.

Leaflet Map: Customer/Seller Index Areas

What this says: smooth areas show where customer demand is stronger than local seller supply and where seller hubs dominate. The detailed city layer is clustered and can be toggled on for exact city lookup.

Static Backup: Highest Demand/Supply Imbalances

What this says: the map is best for exploration, but a ranked table helps the audience remember the specific cities. Demand-heavy cities are places where customer volume is high relative to local seller activity. Supply-heavy cities are seller hubs that ship outward.

Recommended Slide Story

  1. Start with the so-what question: how does SP-centered supply affect reach, cost, and speed?
  2. Show the hub map: demand is national; seller hubs are clustered.
  3. Show the city demand/supply ratio map: identify where demand exceeds local supply and where seller hubs ship outward.
  4. Show supply versus demand by state: SP is much more dominant as an origin than as a destination.
  5. Show distance distribution: this is not mostly local commerce.
  6. Show distance pressure: longer routes increase freight and delivery days.
  7. Close with lanes: the largest and hardest lanes point to concrete logistics opportunities.

Caveats