Changelog

All notable changes to the Ecommerce Attribution API will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[1.0.7] - 2026-07-06

Added

• Web-to-app use case support with affcookieApp entry point
• Mobile application attribution handling with dedicated cookie management

Changed

• Removed affCookie field from payload response (breaking change)
• Mobile apps now receive encrypted affcookie value to store as affcookieApp

Technical

• Updated attribution algorithm to support three-way comparison (current, web, mobile)

[1.0.6] - 2026-06-16

Changed

• Updated levers data referential
• Improved lever matching accuracy

[1.0.5] - 2026-03-26

Changed

• Removed default values from levers data referential
• Updated lever values for better BI compatibility
• Enhanced data consistency across attribution flows

[1.0.4] - 2026-03-26

Changed

• Removed default values from levers data referential
• Updated lever values for better BI compatibility

[1.0.3] - 2026-02-03

Technical

• Upgraded AWS Node.js runtime version
• Improved Terraform deployment configuration
• Enhanced infrastructure stability

[1.0.2] - 2025-12-09

Fixed

• Managed levers data case sensitivity
• Added lowercase/uppercase compatibility for lever matching
• Improved data normalization

[1.0.1] - 2025-06-11

Added

• New lever rule to referential

[1.0.0] - 2025-06-05

Added

• Initial release of Ecommerce Attribution API
• Introduced levers.json data format
• Implemented lever matcher logic
• Attribution algorithm with category-based priority
• Support for web cookie attribution (affcookie)
• HttpOnly cookie management
• Error handling with structured responses
• OpenAPI specification

Features

• POST /referential/v1/best-visit/cookie-attribution endpoint
• Three-way attribution comparison (current, web, mobile)
• Lever category priority system (1-5)
• Encrypted cookie management
• Multi-environment support (production, pre-production, test)