Objective:
Deliver an independent, data-driven ranking of the world's leading ecommerce websites using publicly available traffic data. Only sites whose core business is online retail and digital commerce are included.

Inclusion Criteria:
Included are ecommerce retailers and marketplaces where the primary focus is online shopping and order fulfillment. Pure classifieds, content-only sites, corporate brochures without active ecommerce, and payment-only providers are excluded.

Regional Sites Are Separate Entries (No Consolidation):
Regional storefronts and ccTLD variants (e.g., amazon.de, amazon.co.uk) are listed as distinct platforms with their own ranks and indices. Metrics are not combined across regions to highlight market-specific performance and effectiveness.

Core Ranking Factor – Website Traffic:
The ranking is formed based on website traffic assessment from multiple authoritative sources. The evaluation combines data from four independent sources for accuracy and completeness.

Data Sources:

• Cisco Umbrella Top 1M: Current demand/usage via passive DNS; includes non-browser traffic.
• Tranco Top 1M: 30-day aggregated rank from multiple providers for stability and noise-resistance.
• Majestic Million: Link authority using referring /24 subnets across its web graph.
• Similarweb: Traffic and engagement estimates to complement ranking signals.

Handling of Missing Data:
If a site is missing from any source, the missing value is estimated from available sources with a 10% conservative adjustment to avoid optimistic bias.

Ranking Scale:
Each website receives a proprietary index from 999 (maximum) to 0 (minimum), computed from a weighted combination of traffic metrics across all sources.

Verification and Updates:
All sources are public and auditable. Updates are performed regularly to reflect changes in ecommerce traffic patterns. Only sites verifiable through public traffic data are included.

Key Evaluation Factors

Note: Treating regional storefronts as separate entries enables clean benchmarking by country/region and isolates execution differences across markets.