AWS OpenSearch is a utility that allows you to search databases, not just for the primary key, but for any field, even partial matches. OpenSearch is best used as a complement to your database to add additional search functionality. It is important to note as well, OpenSearch was formally ElastiSearch. You can deploy OpenSearch via a managed cluster, or serverless. It comes with a dashboard as well for visualization. Data can be imported through Kinesis Firehose, AWS IoT, and CloudWatch logs. In terms of security, Cognito, KMS, and TLS can be utilized.