Orb Customer API
A customer is a buyer of your products, and the other party to the billing relationship. In Orb, customers are assigned system generated identifiers automatically, but it's often desirable to have these match existing identifiers in your system. To avoid having to denormalize Orb ID information, you can pass in an `external_customer_id` with your own identifier. See [Customer ID Aliases](/events-and-metrics/customer-aliases) for further information about how these aliases work in Orb. In addition to having an identifier in your system, a customer may exist in a payment provider solution like Stripe. Use the `payment_provider_id` and the `payment_provider` enum field to express this mapping. A customer also has a timezone (from the standard [IANA timezone database](https://www.iana.org/time-zones)), which defaults to your account's timezone. See [Timezone localization](/essentials/timezones) for information on what this timezone parameter influences within Orb.