Capability Free version Full version
Prevent Duplicates creation    
Get overview on Duplicates    
Define bespoke rules 1 rule only Unlimited
Bulk detect Duplicates Based on 1 rule Unlimited
Bulk Automerge 10 records Unlimited
Support NO YES

For Dynamics 365 Online or Power Platform – download Duplicate Detection directly from Microsoft AppSource

Download From Appsource

For Dynamics 365 Onpremise – download Duplicate Detection here
CRM 2015 8.2 and higher versions are supported

Download Duplicate Detection