Migrating users without downtime in your service (The Lazy Migration Strategy)

Migrating authentication systems can be complex, as seen in real-world examples like WeTransfer and Parquet, where challenges such as managing linked accounts, dealing with API rate limits, and ensuring compatibility of password hashes arise. WeTransfer adopted a phased migration strategy, starting with Lazy Migration to gradually integrate users into a new auth provider, followed by a bulk import phase. Similarly, Parquet faced additional challenges due to the lack of an in-house OAuth endpoint in Supabase, leading them to develop a custom solution. SuperTokens has facilitated the migration of numerous clients, such as Built Intelligence and Poppy, who faced significant pricing changes from previous providers like Auth0. Lazy Migration, as a strategic approach, involves moving components incrementally to minimize downtime, mitigate risks, and optimize costs, offering flexibility and adaptability throughout the process. This method allows organizations to address potential issues early, ensuring a smooth transition without disrupting critical operations.