If you are looking online, look for your own Microsoft "badge" to the organisation site or branding. For instance, partners who maintain a predetermined number of customer accounts routinely put money into education and training for their employees and keep sufficient staffing levels commensurate with a high degree of support receive a Silver or Gold badge.
Success stories and also the number of years dedicated to their craft. It takes time to develop the technical experience, and understanding must be a partner. Find out your organisation has been in business as it applies to the solution you are assessing. Check the organisations site for client citations or case studies.
Industry encounter. Request prospective organisations about their expertise in your business. You may realize that the partner has.
Additional deductions and referral programs. Being a Microsoft partner is not enough. Check to find out if the organisation partners with any other solution providers offering ERP or add on options, e.g., electronic signature, marketing automation, or integration resources which are necessary to build a comprehensive business solution for your company.