Which service is an open-source search and analytics engine known for its quick time to value?

Amazon OpenSearch Service is recognized as an open-source search and analytics engine that allows users to easily interact with and analyze large volumes of data. It is designed to provide quick insight and operational intelligence over vast datasets, which is a key benefit when organizations need to derive actionable information rapidly.

The service supports complex queries and offers full-text search capabilities alongside analytics features that can deliver fast responses. OpenSearch is particularly beneficial for use cases such as log analytics, performance monitoring, and even full-text search across documents. Its integration with other AWS services makes it highly scalable and efficient, allowing businesses to set up a robust search and analytics framework without a significant time investment.

In contrast, while Amazon Kinesis Data Analytics focuses on real-time analytics for streaming data, Amazon Elasticsearch Service is a predecessor of OpenSearch, now integrated into it. Amazon QuickSight, on the other hand, is a business analytics service that visualizes data and generates insights through dashboards but is not primarily recognized as a search engine. Therefore, the distinct characteristic of OpenSearch being built for quick and efficient searching and analyzing large datasets establishes its position as the correct answer.