https://738723.8b.io/

Traffic preservation should be treated as a business requirement.

6. Testing Features Instead of Transactions

A product page can work.

A cart can work.

A payment gateway can work.

That does not mean the complete transaction works.

Enterprise ecommerce relies on chains of systems.

A customer may:

find a product → see inventory → receive pricing → apply a promotion → enter checkout → calculate tax → make payment → create an order → trigger fulfillment.

A failure anywhere in that chain can create a failed purchase.

Testing therefore needs to include complete workflows.

Teams should also deliberately test failures.