The following table provides a brief comparison of the four available search options in Microsoft Dynamics 365 for CE. Microsoft often provides many options for achieving the same goal (just look at all you can do with Outlook!)
The link to this information and to read more https://docs.microsoft.com/en-us/dynamics365/customer-engagement/basics/search-and-find-header
Relevance Search (Online Only, the power of Azure)
Full-text Quick Find (also called Categorized Search)
Enabled by default?
No. An administrator must manually enable it under system settings.
Single-entity search scope
Not available in an entity grid. You can filter the search results by an entity on the results page.
Available in an entity grid.
Multi-entity search scope
There is no maximum limit on the number of entities you can search. Note: While there is no maximum limit on the number of entities you can search, the Record Type filter shows data for only 10 entities.
Searches up to 10 entities, grouped by an entity.
Multi-entity search not available.
Finds matches to any word in the search term in any field in the entity.
Finds matches to all words in the search term in one field in an entity; however, the words can be matched in any order in the field.
Finds matches as in a SQL query with “Like” clauses. You have to use the wildcard characters in the search term to search within a string. All matches must be an exact match to the search term.
Query builder where you can define search criteria for the selected record type. Can also be used to prepare data for export to Office Excel so that you analyze, summarize, or aggregate data, or create PivotTables to view your data from different perspectives.
Text fields like Single Line of Text, Multiple Lines of Text, Lookups, and Option Sets. Doesn't support searching in fields of Numeric or Date data type.
All searchable fields.
Returns the search results in order of their relevance, in a single list.
For single-entity, returns the search results in an entity grid. For multi-entity, returns the search results grouped by categories, such as accounts, contacts, or leads.
Returns search results of the selected record type with the columns you have specified, in the sort order you have configured.
Trailing wildcard supported for word completion.
Leading wildcard supported. Trailing wildcard added by default.