Why Supplier Discovery Matters in Services Procurement

In many organisations, services procurement doesn’t begin with a process, it begins with a need. 

A team identifies a problem, starts shaping a solution, and often has an idea of which suppliers to engage. By the time a Statement of Work (SOW) contract is created, key decisions like scope, delivery approach, and supplier choice, have often already been made. 

At that point, supplier selection is no longer open to influence. What follows is less about shaping the work and more about managing the delivery. Which is why supplier discovery plays an important role earlier, when that decision is still being formed. 

Supplier Selection Starts Upstream

Services procurement is inherently centred on supplier-delivered outcomes, which requires defining not just what work is needed, but how it will be delivered, and who will deliver it. 

Upstream, this includes defining scope, timelines, milestones, and KPIs, as well as running competitive processes that allow suppliers to be evaluated on expertise, delivery approach, and price. It is also where supplier selection takes place while options are still open.  

When this stage is missed or fragmented amongst processes, procurement teams inherit supplier decisions rather than influence them. From there, the focus shifts away from selecting the right supplier and shaping the work and toward administering what has already been agreed, tracking progress, managing changes, and addressing issues as they arise.  

Discovery Shapes the Outcome

Supplier discovery plays a role in shaping the work and outcome itself, not just selecting who delivers it. 

By removing direct award bias, it allows different suppliers to respond to the same problem in different ways. That can influence how the work is ultimately defined, highlighting gaps, challenging assumptions, or proposing alternative approaches. 

It also creates a basis for comparison beyond price alone, bringing delivery approach and expertise into view earlier in the process. At the same time, it builds relationships, establishes clear alignment around expectations, responsibilities, success measurements, and how delivery will be managed before the work begins.  

Without upstream supplier discovery, this clarity is often established later, once the SOW is already in place. At that point, confusion, compliance issues, or gaps in delivery expectations are more likely to surface, often resulting in lost value. 

Before and After the SOW

The importance of upstream in services procurement becomes clearer when looking at who selects the supplier, and when that decision is made. 

Before an SOW is set, there is flexibility where the scope can be refined, suppliers can influence the approach, and supplier selection happens while key decisions are still open. After an SOW is finalised, that flexibility narrows as, the supplier has already been chosen, the work defined, and the focus shifts to administering and managing delivery. 

This is reflected in how different technology models operate in alignment with their primary function. 

In a Vendor Management System (VMS), supplier functionality is built around the primary focus of hiring contractors and temporary workers within a contingent labour model, typically with a staffing firm acting as the ‘supplier’ entity. This aligns with a process that begins once requirements are already defined and need to be executed in the downstream phase, where the staffing company plays a role in supplier selection, for example by identifying and placing the right candidate.

In a Services Procurement System (SPS), supplier selection sits with procurement and the buyer, supported earlier in the process when scope, supplier choice, and delivery approach are still being shaped, all the way through to delivery. This may include access to broader supplier networks and the use of data or AI-driven recommendations to inform selection, providing additional context while decisions are still open.  

Supplier discovery sits within that upstream phase. If it is missed, the supplier is often selected before the work is fully defined, and the focus shifts to managing that decision rather than shaping it.