Data Quality: Person Account Merging and Duplicate Record Sets in Lightning Experience, Third-Party Data Integration

Duplicate Management now covers person accounts. Duplicate record sets are available in Lightning Experience, and what’s more, in Lightning Experience only, you can use them to merge duplicates. And by using a new action on Salesforce account and contact records, your sales team can compare and integrate third-party industry data field by field.
Available in: Group, Professional, Enterprise, Performance, Unlimited, and Developer Editions