Consider fractional procurement help when a supplier disruption could stop your business and nobody owns the work of preparing an alternative. Start by finding out where you're exposed. A lower price alone won't answer that question.
I was talking with a procurement operator about the kinds of problems he could own for a smaller manufacturer. I used an illustrative situation: a business relies on a few suppliers, hasn't revisited the relationships in years, and would be in trouble if one couldn't deliver.
My point on the call was simple: “You need somebody owning this.”
Find out what you can actually replace
If you're the owner, I'd start with a specific question: what happens if this supplier can't deliver the next order?
Ask someone to trace the answer through the business. What can't you make or deliver? How long can you keep working with what you have? Is the alternative a supplier you can actually use, or just a name somebody found?
A backup on a spreadsheet isn't much help if nobody has established whether it can meet the requirement. That doesn't mean you should immediately replace a reliable supplier or spread every purchase across several vendors. It means the decision should follow the work of checking your options.
Give the work an owner
In the example, I talked about someone renegotiating with existing vendors and finding new ones. Those are possible parts of the assignment. The right scope depends on what the review finds.
I'd want to know which suppliers we depend on, what alternatives we have and what it would take to use them. I'd also want to know who will keep it current. If the review ends with recommendations nobody has time to act on, you still have the same exposure.
This is where fractional can fit. You may have purchasing handled day to day, but need an experienced person to lead a defined review and follow through on the important changes. That doesn't automatically require building a new department.
Don't measure this work only by whether the next invoice gets cheaper. Ask what your business will be able to do if the next delivery doesn't arrive. A useful engagement should leave you with a more credible answer.