Segments should support a decision
Start with the purpose of the grouping. Planning service, comparing purchases and identifying applications may require different characteristics.
A useful segment explains something about the customer. A label such as “large” or “strategic” says little about what to propose or why it would matter.
Use information the team can maintain
Industry, operating model, product application and purchasing patterns may help. Avoid creating numerous detailed categories if nobody will check whether they remain accurate.
Allocation rules should be clear. If two people classify the same business differently, comparisons start depending on who entered the data rather than the customer's real characteristics.
Check whether the grouping still helps
A customer can change direction or expand its activities. Review segmentation when meetings provide relevant new information.
For those managing operations and sales, the test is whether segmentation improves decisions rather than how many groups exist. In CRM, a segment gives purchase history context, helping the team compare similar businesses and identify differences worth discussing.