Price Migration Engine

The price migration engine is an orchestration engine used to perform controlled price migrations.

It currently consists in

• A collection of lambdas designed to work together as a state machine
• The TypeScript code required to run an Android price rise

General Introduction to price migrations and the engine:

• An introduction to the general principles of price migrations
• The journey of a cohort item
• Coding directives
• Operational Directives

Future price migrations special directives

• In late 2026, there will be the next Supporter Plus price migration. To avoid the billing date mis-alignment problem we encountered in 2025, there should be a product re-structuration performed as part of the price migration to align the billing dates of the main charge and the extra contribution. Note that we also have a permanent stop to prevent processing such rate plans across all products.

Web Price Rises

• Notification windows
• The art of computing amendment effective dates
• The art of the cap; or how to gracefully cap prices in the engine
• What does ROW (Rest of World) means ?
• lambdas code structure
• Set up a new cohort of subscriptions for price rise
• Setting migration extra attributes
• The migration implementation manual
• Downloading fixtures
• Notes on the Zuora Order API
• Communication with braze
• Notes on prices
• Cohort Items
• Troubleshooting document
• Quirks of the Engine

Android Price Rises

• README

Tools:

See tools/README.md

Further documentations:

• State machine
• Lambdas
• Data stores