Important: This integration method is Deprecated as of January 1, 2017. For new integrations, see the PayPal Express Checkout Integration Guide.
To integrate the Express Checkout with In-Context flow, you must:
Read the Eligibility requirements to determine whether your Express Checkout integration is a good candidate for the In-Context Checkout experience. If In-Context Checkout does not support a feature that you currently use, your buyers are presented with the Express Checkout full-page redirect checkout flow.