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Financial infrastructure

SBI API Banking Infrastructure

A public playbook for fintech teams evaluating direct Tier-1 banking rails, payment APIs, VAN collections, HSM requirements, and go-live sequencing.

Who it is for

Fintechs, NBFCs, payment companies, and enterprises planning direct bank integration.

Tags

SBIAPI bankingVANHSMpayment rails
01

Entry Path

Banking API work starts with the right institutional route. Teams should map whether the work belongs with transaction banking, corporate internet banking, an innovation sandbox, or a relationship-managed enterprise channel.

  • check_circleTransaction Banking Unit for production rails
  • check_circleCorporate banking tiers for authority and limits
  • check_circleSandbox access before production commitments
02

Security Baseline

Production S2S banking integrations require a security stack that is planned early, not bolted on near go-live.

  • check_circleTLS 1.2+ and EV SSL
  • check_circleOAuth 2.0 session controls
  • check_circleSHA256withRSA payload signing
  • check_circleFIPS-grade HSM planning at scale
03

Migration Economics

Direct rails are not always the first move. The decision should be based on volume, control requirements, reconciliation complexity, and dependency risk.

  • check_circleAggregator for speed
  • check_circleDirect rails for control
  • check_circleBreakeven modeling around transaction volume
  • check_circleHybrid migration to reduce cutover risk
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