name: Black Knight / ICE Mortgage Technology Vocabulary
description: >-
  Domain vocabulary covering Black Knight's mortgage technology product lines, the
  ICE acquisition (Sept 2023), and the Optimal Blue divestiture to Constellation
  Software. Spans loan servicing (MSP), default management (LoanSphere), loan
  origination (Empower / Encompass), and secondary marketing (Optimal Blue PPE).
created: '2026-05-23'
modified: '2026-05-23'

terms:
  - term: MSP
    longForm: Mortgage Servicing Platform
    definition: >-
      Black Knight's mainframe-rooted system-of-record for loan servicing — the
      historically dominant platform on which the majority of US first mortgages
      are serviced. Now owned by ICE Mortgage Technology.
    category: Product

  - term: MSP DX
    longForm: MSP Direct Exchange
    definition: >-
      The modern REST API surface that exposes MSP capabilities to integrators.
      Covers loan boarding, customer service, escrow, payments, payoffs, default,
      loss mitigation, investor reporting, stop-advance, and ownership transfer.
    category: API

  - term: LoanSphere
    definition: >-
      Black Knight's umbrella brand for default management, document services
      (eClosing, eVault, eRecording), and decisioning analytics. Now folded into
      ICE Mortgage Technology.
    category: Product

  - term: Empower
    definition: >-
      Black Knight's mid-to-enterprise loan origination system. Coexists with
      Encompass under ICE Mortgage Technology; partner-gated integration model.
    category: Product

  - term: Encompass
    definition: >-
      Loan origination system originally from Ellie Mae (acquired by ICE in 2020).
      Now the canonical LOS API surface under ICE Mortgage Technology, exposed via
      Encompass Developer Connect at api.elliemae.com.
    category: Product

  - term: Optimal Blue PPE
    longForm: Optimal Blue Product & Pricing Engine
    definition: >-
      The industry-dominant rate-and-product pricing engine used by mortgage
      originators to price and lock loans. Acquired by Black Knight in 2020;
      divested to Constellation Software's Perseus Operating Group in Sept 2023
      as a condition of FTC clearance for the ICE / Black Knight deal.
    category: Product

  - term: Resitrader
    definition: >-
      Whole-loan trading platform that is part of Optimal Blue (now Constellation).
    category: Product

  - term: Loansifter
    definition: >-
      Turnkey PPE for mortgage brokers under the Optimal Blue umbrella.
    category: Product

  - term: Promise To Pay
    definition: >-
      Borrower commitment to pay arrears, captured by the ICE Mortgage Servicing
      Promise To Pay API along with reason codes to support collection workflows.
    category: Capability

  - term: Investor Reporting
    definition: >-
      Loan-level activity reporting from servicers to GSEs (Fannie, Freddie),
      Ginnie Mae, and private investors. Core MSP DX capability.
    category: Capability

  - term: Loss Mitigation
    definition: >-
      Workflows to avoid foreclosure (modifications, forbearance, deeds in lieu,
      short sales). Exposed by MSP DX Loss Mitigation APIs.
    category: Capability

  - term: Servicing Vault
    definition: >-
      Document and data vault product category in the ICE Mortgage Servicing
      catalog, descended from Black Knight LoanSphere document services.
    category: Product

  - term: SIAM
    longForm: Servicing Investor Account Management
    definition: >-
      Investor account management capability in the ICE Mortgage Servicing catalog.
    category: Capability

  - term: ICE Acquisition
    definition: >-
      Intercontinental Exchange completed its acquisition of Black Knight in
      September 2023 for approximately $11.7B (originally announced at $13.1B
      in May 2022).
    category: Event

  - term: Optimal Blue Divestiture
    definition: >-
      As a condition of the FTC clearance for the ICE / Black Knight deal,
      Optimal Blue was sold to Constellation Software's Perseus Operating Group
      in September 2023.
    category: Event

  - term: Rate Lock
    definition: >-
      Commitment by a lender to honor a specific interest rate and pricing for a
      borrower for a fixed period, created and managed through Optimal Blue PPE
      lock-desk APIs.
    category: Capability

  - term: Mortgage Market Rate Indices
    definition: >-
      Sixteen rate indices published by Optimal Blue Business Intelligence APIs,
      derived from real-time PPE flow.
    category: Data Product