# Page Flow Approach

The checkout process is built on the **Page Flow** architecture.

1. **Step-based Progression**: Each step focuses on its own responsibility. The user completes only one task at a time (for example: selecting an address or choosing a payment method).
2. **Conditional Navigation**: Some steps may be automatically skipped depending on the user's state. For example, the email collection step is unnecessary for logged-in users.
3. **Revisability**: The user can return to previous steps at any time to update their information. The system automatically handles how this change affects subsequent steps.
4. **State Preservation**: Even if the user leaves the checkout process, they can resume from where they left off within a certain time period.


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