Acquisition Process

Integrated Baseline Review (IBR)

An Integrated Baseline Review (IBR) is a joint assessment conducted by the government Program Manager (PM) and the contractor to establish a mutual understanding of the Performance Measurement Baseline (PMB). This understanding provides for an agreement on a plan of action to evaluate the risks inherent in the PMB and the management processes that operate during program execution.

Definition: A Integrated Baseline Review (IBR) is an assessment between the government and a contractor to confirm that a project is properly planned, can be executed, and a Performance Measurement Baseline is established.

Integrated Baseline Review (IBR) Requirement

Program Managers are required to conduct IBRs on all cost or incentive contracts that require the implementation of Earned Value Management (EVM) (contracts valued at or greater than $20 million). Must be conducted within 180 days for project start.

Guide: Program Managers Guide to the Integrated Baseline Review (IBR)

Purpose of an Integrated Baseline Review (IBR)

An Integrated Baseline Review (IBR)s should be used to understand:

  • The scope of the PMB consistent with authorizing documents;
  • All activities and deliverables required by the Statement of Work (SOW) are in the Work Breakdown Structure (WBS);
  • Work packages are developed at the appropriate level of the WBS;
  • Management control processes;
  • Risks in the PMB associated with cost, schedules, and resources; and
  • Corrective actions where necessary.

IBR Figure

Integrated Baseline Review (IBR) Results

Completion of the review should result in the assessment of risk within the PMB and the degree to which the following have been established:

  1. The technical scope of work is fully included and is consistent with authorizing documents,
  2. Key project schedule milestones are identified and supporting schedules reflect a logical flow to accomplish the work,
  3. Resources (budgets, facilities, infrastructure, personnel, skills, etc.) are available and are adequate for the assigned tasks,
  4. Tasks are planned and can be measured objectively relative to the technical progress,
  5. Rationales underlying the PMB are reasonable, and
  6. Management processes support the successful execution of the project.

When to conduct an Integrated Baseline Review (IBR)

IBRs should be scheduled as early as practicable and the timing of the IBRs should take into consideration the contract period of performance. The process will be conducted not later than 180 calendar days (6 months) after:

  1. Contract award,
  2. Exercise of significant contract options, and
  3. Incorporation of major modifications.

IBRs are also performed at the discretion of the PM or within a reasonable time after the occurrence of major events in the life of a program. These events may be the completion of the Preliminary Design Review (PDR), completion of the Critical Design Review (CDR), a significant shift in the content and/or time phasing of the PMB, or when a major milestone such as the start of the production option of a development contract is reached. Continuous assessment of the PMB will identify when a new IBR should be conducted.


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Updated: 6/26/2021

Rank: G1

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