A common pattern is payroll, payouts to contractors or marketplace sellers, or loan disbursement and repayment: cases where a business needs to move money in or out of a verified bank account on a schedule it controls, not just confirm the account exists.
Transfer builds directly on the account verification Auth already provides, so a typical flow links the account, verifies it through Auth, and then originates the debit or credit through Transfer, rather than treating the two as unrelated steps.
Same-day ACH is available for transfers that qualify, which matters for anything time-sensitive like a payout that can't wait the standard one-to-two business days for a regular ACH transaction to settle.