Efficient data retrieval with millisecond fetch times sets it apart from RDS.
Amazon DocumentDB is easy to use, offering a flexible pricing model ideal for startups, with straightforward migrations and millisecond data retrieval. While speed impacts projects positively, challenges exist in performance tuning at scale and technical support could improve. Enhancements in high availability, sharding, replication, and automatic failover are needed. The initial learning curve exists, and a hybrid database approach using relational databases may be beneficial for comprehensive tech solutions.