# Migrating to Stripe Billing’s Strong Customer Authentication (SCA)-compliant flow

If your Stripe account is based in the [European Economic Area (EEA)](/questions/migrating-to-stripe-billing-s-strong-customer-authentication-sca-compliant-flow) and you currently use Stripe Billing, we strongly recommend [upgrading your integration](https://stripe.com/docs/billing/migration/strong-customer-authentication) in order to prevent SCA-related declines.
## Additional Information
* All of the changes in our [migration guide](https://stripe.com/docs/billing/migration/strong-customer-authentication) are backwards-compatible and do not require upgrading your API version.
* Businesses based outside of the EEA that use Stripe Billing are not required to complete this migration.
* Strong Customer Authentication (SCA) Enforcement Date
* [Strong Customer Authentication (SCA) Preparation and Resources](/questions/strong-customer-authentication-sca-preparation-and-resources)