In a scenario where query performance is prioritized over cost, which AWS service combination is recommended for analyzing scanned documents?

The emphasis on query performance over cost in analyzing scanned documents makes the combination of Amazon Elasticsearch Service and Amazon S3 a suitable choice.

Amazon Elasticsearch Service is specifically designed for full-text search, enabling fast and scalable searches of large volumes of unstructured data, like scanned documents. Its capability to index and retrieve data quickly makes it ideal for scenarios where the speed of query responses is critical.

When paired with Amazon S3, which serves as a versatile and cost-effective storage solution for a vast array of data types, this combination allows users to store their scanned documents efficiently while leveraging the powerful search functionalities of Elasticsearch. This integration facilitates rapid data access and facilitates insightful querying, essential for handling structured and unstructured data alike.

Therefore, for scenarios prioritizing performance in analyzing documents, this pairing provides the necessary tools to address the complexities of querying while ensuring speed and efficiency in data retrieval.