BitGo is a licensed and qualified custodian in the United States. Because of their reputable security track record, we partnered with them to provide us with custodial services for our customers' Bitcoin.
Partnering with a security specialist gives our users far more security than building our own in-house security, and keeps our business costs and fees low, allowing us to focus on helping our customers purchase Bitcoin as easily and inexpensively as possible.
For a deeper exploration of why Swan chooses to partner with a qualified custodian and an overview of custodial risks in general, please read here.