Microsoft has recently decided to retire most of Dynamics 365 certifications by june 30, 2019. You can check out all certifications scheduled to retire here https://www.microsoft.com/en-us/learning/retired-certifications.aspx

New certification program to come will be about role-based certification. That means

Exam MB-200: Microsoft Dynamics 365 Customer Engagement Core  This certification is requiered to achieve both Dynamics 365 for Customer Service Functional Consultant Associate and Dynamics 365 for Sales Functional Consultant Associate

Exam MB-210: Microsoft Dynamics 365 for Sales is the second exam to get Dynamics 365 for Sales Functional Consultant Associate certification

Exam MB-230: Microsoft Dynamics 365 for Customer Service is the second exam to get Dynamics 365 for Customer Service Functional Consultant Associate

Existing certifications Microsoft Dynamics 365 customer engagement Online Deployment (MB2-715)  and Microsoft Dynamics 365 Customization and Configuration (MB2-716) are still available

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