An engineer is constructing a web-based aws video
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An engineer is constructing a web-based application that uses Amazon DynamoDB for storing data. The data is distributed across two tables: 'authors' and 'books'. The 'authors' table uses 'authorName' as its partition key, while the 'books' table has 'bookTitle' as the partition key and 'authorName' as the sort key. The application requires the ability to fetch multiple books and authors simultaneously in a single database operation for effective performance. The engineer is seeking a solution that maximizes application efficiency and reduces network traffic. What strategy should the engineer employ to achieve these requirements?