Find partners with a solid history of successful implementations on varied Dynamics 365 modules, in this instance, the ones that are relevant to your business. A good partner should be able to offer case studies, references, and Microsoft D365 Finance, Supply Chain, Sales, or Project Operations certifications.
Tip: Request references from businesses or industries of comparable size, and ask them about their experience with end-to-end deployments of Dynamics 365 Project Operations if your company is project-based.
