Explanation:
Amazon Neptune is a managed graph database for low-latency multi-hop queries using Gremlin or SPARQL. Redshift is for analytical SQL. Aurora uses relational joins which are less efficient. Keyspaces is wide-column store without graph semantics.
Which AWS database service is purpose-built for graph queries and multi-hop traversals such as friends-of-friends?
A
Amazon Redshift
B
Neptune
C
Amazon Aurora
D
Amazon Keyspaces
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