Dependency — Definition & Commercial Strategy

Definition

In the context of B2B professional services, a Dependency is a prerequisite action, asset, or decision—either from the client, a third-party vendor, or an internal department—that must be satisfied for a project task to commence or reach completion. Effectively managing dependencies transforms them from hidden project killers into structured milestones that protect the integrity of your delivery timeline.

Explanation

Dependencies are the silent assassins of B2B profitability. In high-end consulting and IT services, most firms treat dependencies as an afterthought, burying them in the fine print of an SOW. This is a strategic failure. When dependencies are poorly defined or communicated, you are not just risking a delay; you are inviting margin leakage.

When a client fails to provide access, data, or approvals on time, your team sits idle, burning billable hours on non-productive overhead. Because this is rarely tracked as a distinct cost category, it manifests as "lower than expected margins" at the end of the quarter. Aggressive commercial strategy dictates that dependencies are not just project management artifacts—they are commercial levers. If you do not explicitly tie the client’s obligations to the delivery schedule, you lose your leverage to renegotiate timelines or adjust budgets when the client inevitably misses their mark.

Examples (or Commercial Impact)

• Done Poorly: A proposal states, "Client will provide all necessary data for the migration." This is vague, unenforceable, and dangerous. When the client takes three weeks to provide the data, the project timeline slips, your senior engineers are over-utilized, and you eat the cost of the delay to maintain the relationship.
• Done Well: The proposal includes a "Prerequisites and Dependencies" section: "Project initiation is contingent upon the delivery of [X] data set by [Date]. If data delivery is delayed beyond [Date], the project launch will be pushed back by a minimum of two weeks, and an additional resource reallocation fee of [Amount] will be applied to maintain the original go-live date." This forces the client to own their role in the project’s success.

Commercial Checklist

• Map the Critical Path: Before sending the proposal, identify every external requirement. If the project cannot move forward without a client-side action, it is a dependency that must be explicitly listed.
• Quantify the Impact: Never list a dependency without stating the consequence of failure. Use clear language: "If dependency X is not met by Y, then Z impact to the timeline/budget occurs."
• Establish a 'Dependency Registry': During the pre-sales phase, maintain a living document that tracks the status of all dependencies. If a dependency is 'at risk,' escalate it to the client stakeholders before the contract is signed.
• Tie Dependencies to Milestones: Integrate dependencies into your payment schedule. Do not trigger a milestone payment if a critical client-side dependency is still outstanding.

Related Concepts

• [Margin Leakage](/glossary/margin-leakage)
• [Scope Creep](/glossary/scope-creep)
• [SOW (Statement of Work)](/glossary/sow)