Why traditional cost models fail in dynamic programs
Understand the structural limitations of spreadsheet-based estimating when requirements change frequently and late-stage scope shifts invalidate early assumptions.
WHITE PAPER
Reconnecting the Digital Thread to Cost
A practical path to scope-aware estimating, change intelligence, and better program outcomes
White Paper by Tom Shanahan, ProjStream + PrecisionAI
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The Missing Link in Digital Engineering
Digital engineering promises better decisions, faster proposals, and tighter cost control. But for most government contractors and engineering firms, cost estimating remains disconnected from requirements—stuck in spreadsheets, manual processes, and version-blind workflows.
The result? Estimates that age poorly, change orders that surprise stakeholders, and program teams that can't trace scope shifts back to cost impacts in real time.
The result? Estimates that age poorly, change orders that surprise stakeholders, and program teams that can't trace scope shifts back to cost impacts in real time.
A Version-Aware Solution
This white paper introduces a practical framework for reconnecting requirements to cost through version-aware tracking, automated change intelligence, and scope-sensitive cost attribution.
Built on lessons from defense contractors, systems integrators, and engineering-intensive programs, this approach enables teams to move from reactive cost management to proactive decision support.
Built on lessons from defense contractors, systems integrators, and engineering-intensive programs, this approach enables teams to move from reactive cost management to proactive decision support.
Technical Paper For:
Estimating Leadership | Program Controls | Systems Engineering | Digital Engineering | Transformation Teams
What the Paper Covers:
A Blunt Truth About AI and Cost Estimating
"AI can accelerate estimating—but it can't fix broken requirements tracking. Without version-aware scope management, even the smartest models produce estimates that age like milk. The real innovation isn't in prediction algorithms; it's in connecting requirements, changes, and costs in a way that survives contact with reality."
— From the white paper
— From the white paper
About the Author
Tom Shanahan
Founder & CEO, ProjStream
Tom Shanahan is the founder and CEO of ProjStream, a digital platform that helps government contractors and engineering firms reconnect their requirements, estimates, and program outcomes.
With over two decades of experience in defense contracting, systems engineering, and enterprise software, Tom has led transformation initiatives for Fortune 500 defense contractors and helped engineering-intensive organizations modernize their estimating and program control workflows.
Prior to founding ProjStream, Tom held leadership roles in cost engineering, digital transformation, and business development at major aerospace and defense firms. He holds degrees in systems engineering and business administration and has published extensively on the intersection of requirements management, cost estimating, and AI-driven decision support.
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About ProjStream + PrecisionAI
ProjStream is a digital platform that helps government contractors and engineering firms reconnect their requirements, estimates, and program outcomes through version-aware tracking and intelligent automation.
Built specifically for estimating teams, program controls professionals, and digital engineering leaders, ProjStream’s PrecisionAI module delivers scope-sensitive cost attribution, automated change intelligence, and real-time impact analysis—enabling teams to move from reactive cost management to proactive decision support.
Trusted by defense contractors, systems integrators, and engineering-intensive organizations, ProjStream integrates with existing ERP, PLM, and requirements management systems to create a unified digital thread from requirements to cost.