Enterprise Architecture

Enterprise Integration Standards

The connectivity model for linking LL with core, ERP, payments, bureaus, identity, and partner ecosystems.

Integration standards protect speed, security, and change control

Uncontrolled interfaces create inconsistent implementations, weak change discipline, and higher operational risk.

LL standardizes API, event, authentication, and versioning patterns so integration can scale without fragmenting governance.

Table of Contents

Architectural principles

  • Separation of policy, execution, accounting, and AI signal layers
  • Canonical data normalization across lifecycle stages
  • Event-driven state transitions with audit traceability
  • Versioned APIs and controlled change governance
  • Hybrid-ready deployment topology

System boundaries

  • LL governs: workflows, policies, accounting events, audit evidence
  • Enterprise retains: core ledger and ERP authority
  • Integration layer: REST, OAuth2/OIDC, mTLS, versioning

Architecture and governance entities that connect this page to the broader control plane.

Integration usage

Why it matters

  • Clarifies platform boundaries for architecture, procurement, and governance review
  • Connects policy, execution, and accounting evidence across related pages
  • Helps executives and implementation teams navigate the operating model with less friction
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