In complex IT initiatives, the tunnel effect often sets in unnoticed, drowning the client–vendor relationship in a stream of invisible deliveries. While the schedule drifts and milestones remain informal, the product is built in the shadows until the final delivery, when the gap with actual needs abruptly becomes apparent.
Addressing and preventing this tunnel effect isn’t a matter of technical prowess but of strict, structured project governance. This article offers a pragmatic approach based on visibility, continuous validation, and active client involvement to ensure a compliant, sustainable outcome.
Identifying the Root Causes of the Tunnel Effect
The tunnel effect often stems from a lack of visibility into the schedule and undefined milestones. It’s also fueled by poorly chosen metrics and unstructured communication.
Unclear Schedule and Missing Milestones
A timeline without formal intermediate milestones makes it impossible to gauge real progress. In the absence of clearly identified stages, each team advances according to its own interpretation of priorities, leading to a progressive drift between expectations and development. Without verified deadlines, cumulative delays and late adjustments—which are costly and hard to integrate—become inevitable.
When project breakdown isn’t formalized, early warning signs are impossible to raise. Teams then focus solely on the final delivery, neglecting the need for regular checks. Ultimately, there’s a risk of approving an incomplete scope relative to business requirements, triggering a last-minute scramble during final phase adjustments.
A clear, continuously updated schedule must include structured checkpoints defined jointly with the client during the drafting of the IT requirements specification. Each milestone should undergo documented review, validating both functional and technical deliverables. This way, any delay or adjustment becomes visible and can be addressed before jeopardizing the entire project.
Poorly Chosen Metrics and Imprecise Validation
Generic KPIs—such as percentage completion or number of deployed tasks—don’t always reflect the real business value delivered. Without metrics aligned to end goals, the project advances on useless measures, creating an illusion of progress. This confusion sustains the tunnel effect because client and vendor don’t jointly assess the achievement of true expected outcomes.
For instance, counting delivered features can conceal a mismatch with business needs: several small validated components add no real value if they don’t align with user workflows. Redirecting the project midstream then becomes tricky, as existing metrics fail to mirror operational reality.
Effective indicators must be defined up front, validated by all stakeholders, and regularly reevaluated using Objectives and Key Results (OKR). They should focus on generated value, user experience, and critical performance areas. If discrepancies arise, a quick formal adjustment to the goal or schedule is required.
Insufficient Communication and Governance
Unstructured communication without regular rituals undermines transparency. Sporadic or informal exchanges impede information flow among technical teams, business units, and leadership. Weak warning signs go unnoticed, delaying corrective action.
Governance based solely on implicit trust can lead to unintentional information withholding. Technical teams, eager to meet internal deadlines, may downplay difficulties for fear of delaying launch. Conversely, the client lacks factual data to anticipate risks and adjust budget or timeline. To structure these exchanges, it’s useful to consult a change management guide, which formalizes decision-making and communication processes.
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Silent Impacts on Quality and Budget
Without visible brakes, budget overruns take hold and quality deteriorates. Contract tensions rise and trust between client and vendor erodes.
Budget Drift and Hidden Costs
If financial monitoring only occurs at final delivery, intermediate overruns go undetected in real time. Overtime accumulates, late adjustments incur extra charges, and the initial budget often balloons without the client realizing it. To limit IT budget overruns, it’s essential to implement milestone-based financial tracking.
Hidden costs also stem from repeatedly reworking poorly specified features. Each fix requires reconsidering the overall scope, replanning, and reallocating resources, wearing down both technical teams and business decision-makers. Hourly rates then rise significantly, yet expected gains remain unmet.
User Dissatisfaction and Value Retention
When initial versions arrive late or without formal approval, end users miss the chance to steer development. Features end up poorly tuned, clunky, or ill-suited to real processes. Frustration mounts as the product evolves in the dark without regular stakeholder feedback.
Late adjustments are always more expensive and less effective: fixing a module during design typically costs half as much as reworking it post-integration. Yet the tunnel effect systematically defers feedback until the final phase, generating frustration and wasted time.
Without intermediate deliverables validated by users, expected value remains theoretical until the final release. Post-deployment feedback then becomes the only lever for improvement, extending the post-go-live phase and delaying ROI realization.
Contractual Risks and Partnership Breakdown
A non-compliant final delivery exposes both parties to costly contractual disputes. Scope, timeline, and quality commitments go unfulfilled, eroding trust. Delay penalties and additional correction requests weigh down collaboration, harming future efficiency.
In some cases, the client may terminate the relationship to engage a new vendor to salvage the situation. This shift triggers extra onboarding, code audits, and catch-up costs that can exceed half of the original budget.
Value-Driven Management and Continuous Validation
Managing by value demands rigorous phase breakdowns and regularly approved deliverables. Transparency on risks and client involvement are vital at every step.
Clear Phase Breakdown
Structuring a project into distinct phases (analysis, design, development, testing, deployment) enables control at each stage. Each phase concludes with a formally approved deliverable, ensuring business expectations translate correctly before proceeding. This breakdown reduces overall drift risk.
The analysis phase yields a validated requirements specification, design produces approved mockups and prototypes, development follows a known scope, and testing relies on precise acceptance criteria. At each transition, a steering committee decides on continuation or needed adjustments.
This approach keeps the project visible, measurable, and manageable. Early feedback is collected and any deviations can be corrected before they escalate into disproportionate costs.
Regular Rituals and Structured Communication
Weekly status meetings and monthly governance reviews ensure constant alignment. Minutes are formalized and shared, covering functional, technical, and financial progress. This practice reinforces transparency and enables swift decision-making when necessary.
Each meeting should follow a defined agenda: progress updates, key metrics, risks, and corrective actions. Decisions are recorded in a governance log accessible to all stakeholders. This keeps the client continuously informed and able to adjust priorities without waiting until project completion.
Additionally, using suitable collaboration tools (tracking boards, shared documentation spaces) consolidates exchange traceability. Business and technical teams access a single source of truth, ensuring information consistency and reducing misunderstandings.
Clear Validation Criteria and Client Involvement
Before each milestone, functional and technical acceptance criteria must be documented and approved. These criteria precisely define expected outcomes, test cases, and acceptance thresholds. They serve as the reference during testing and limit subjective debate.
Involving the client in defining these criteria fosters shared accountability. End users can confirm compliance with actual needs, and the vendor works toward clearly established objectives. In this framework, feedback is invaluable for continuous solution refinement.
This practice creates a virtuous cycle: the more the client participates, the more trust builds, and the more milestones pass without surprises. The project then advances in a visible, measurable, and validated way, always aligned with business value.
Success Through Visibility and Milestones
IT projects have shown that clear tracking and proven milestones eliminate the tunnel effect. These successes highlight the efficiency of transparent governance combined with formal validation.
ERP Project for a Construction Firm
A mid-sized construction company, facing misalignment between its business processes and its legacy ERP, chose to split its overhaul into three major phases: business scope definition, configuration and testing, and performance ramp-up. Each phase ended with a validation committee involving the IT department, business managers, and the development team.
Formalizing success criteria during analysis clarified critical workflows and anticipated customization needs. Iterative tests uncovered minor gaps that were fixed before becoming major roadblocks. Progressive delivery of a functional prototype reassured governance and ensured quick user adoption.
This project demonstrated that a milestone-based, visible approach leverages team engagement, budget predictability, and final solution quality. The company launched its new ERP on time, within budget, and with a smooth user learning curve.
Agile E-Commerce Platform
An online retailer adopted an agile methodology to build its order-processing platform. The project was organized into two-week sprints, each concluding with a sprint review showcasing tangible features. The client approved each increment before the roadmap was adjusted.
Frequent feedback enabled rapid prioritization of critical enhancements and eliminated unnecessary development. Transparency on the backlog—shared via a project management tool—provided constant visibility into progress, risks, and remaining effort. Real-time trade-offs prevented end-of-cycle surprises.
Thanks to this agile, transparent governance, the platform went live with a high adoption rate and 92% user satisfaction. Value-driven tracking eradicated the tunnel effect and allowed precise resource and budget management.
Modular Banking Solution Integration
A bank sought to modernize its customer portal by combining an open-source content management system with custom developments for financial-sector requirements. The project was structured into five milestones, each validated by a functional prototype and a security audit.
Transparency on technical progress (code coverage, automated tests) and functional feedback (user comments) enabled rapid identification of needed adjustments. Formal decision points—particularly on architecture choices and dependency updates—reduced compatibility risks and prevented vendor lock-in.
This hybrid approach, paired with strict governance, ensured delivery of a secure, scalable portal capable of integrating new financial services without compromising existing infrastructure.
Adopt Visible Management to Ensure Compliance and Trust
Project success in IT isn’t measured by development speed but by milestone clarity, validation quality, and governance transparency. By structuring your project with formal phases, approved intermediate deliverables, and continuous communication, you avoid the tunnel effect and safeguard budget, quality, and adoption.
No matter the size or complexity of your initiative, our experts are here to help you implement governance that secures every step and delivers as promised.















