Customer references are not required for every specialization, but for many categories they are non-negotiable. Some specializations require validated customer references, while others mandate third-party audits of deployments. The purpose is to confirm real-world delivery success, not just theoretical capability. References must align precisely with the specialization’s scope and demonstrate measurable outcomes. Delays often occur when partners wait too long to request approvals or submit incomplete documentation. Successful partners treat customer reference collection as an early activity, not a final step, ensuring references are current, relevant, and fully aligned with Microsoft’s evaluation criteria.