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Schedule Baseline

The authorized baseline of the project's time model that may be updated only through the formal change control process and serves as the reference point for comparing planned versus actual results.

Key Points

  • Represents the frozen plan for activity dates, milestones, and dependencies at a given point in time.
  • Changes require an approved change request through the integrated change control process.
  • Used to measure schedule variance and performance trends against what was originally planned.
  • May be rebaselined only when significant, approved changes make the original baseline no longer realistic.

Example

A construction project sets its schedule baseline at the end of planning, locking in key milestone dates and activity sequences. When unexpected soil issues delay foundation work, the team submits a change request. Only after formal approval is the baseline updated; until then, progress is reported and variances are calculated against the original baseline dates.

PMP Example Question

Midway through a project, the team discovers a two-week delay on the critical path. To report variance accurately, what should the project manager compare the current forecasted finish dates against?

  1. The latest resource calendar
  2. The product backlog
  3. The schedule baseline
  4. The risk register

Correct Answer: C — The schedule baseline

Explanation: Variance is measured by comparing actuals and forecasts to the approved schedule baseline, which is the official reference for performance measurement.

ICS/OT Cybersecurity Fundamentals — Security Built for Industrial Systems

Industrial control systems cannot be secured like ordinary IT. A forced reboot, aggressive scan, or incompatible patch can interrupt production and create real safety consequences. Effective OT security begins with understanding the systems, constraints, and risks unique to industrial environments.

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Watch the course preview, then build the vocabulary, frameworks, and judgment needed to take credible first steps in ICS/OT cybersecurity.

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ICS/OT Cybersecurity Fundamentals course preview

Build an ICS/OT cybersecurity foundation that fits the real environment

Standard IT controls can disrupt the industrial systems they are meant to protect. Learn how to assess OT risk, design zones and conduits, apply IEC 62443 security levels, use MITRE ATT&CK for ICS, and establish passive asset visibility without risking production. Eight reconstructed incidents connect attacker techniques to the controls that failed, giving you the vocabulary and judgment to make credible security decisions from day one.

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