A Payment Service Provider (PSP) is the commercial layer that moves money: gateways, payment facilitators, and acquirers that connect merchants to card networks for authorization, capture, and settlement. PSPs excel at routing, pricing, risk tooling, and local payment methods. They are the wrong long-term owner of your credential estate if their tokens die when you leave.
Most PSPs issue proprietary stored-credential references (payment method IDs, customer IDs with embedded cards) that only work on their rails. That design optimizes retention, not merchant portability. Network tokens under your TRID invert the model: the PSP becomes a replaceable authorization path.
Healthy architecture treats PSPs as connections, not custodians. You provision credentials once, fetch cryptograms per charge, and forward to whichever connection_id is active, Stripe today, Adyen tomorrow, a custom acquirer for a specific market next quarter.
Veliro’s POST /v1/forward pattern sends token, cryptogram, and metadata to the PSP you configure while Veliro retains lifecycle and scheme relationships. PSP independence is not anti-PSP; it is pro-choice. You keep negotiating leverage, outage resilience, and migration optionality without asking customers to re-enter card numbers.
Evaluate PSPs on forward compatibility: can they accept network tokens and cryptograms you supply, or do they require re-tokenization into their vault? The answer predicts migration cost more accurately than headline processing rates.