A company needs a datastore that can scale to handle millions of database queries per second for its application. Which AWS service meets this requirement?
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Correct answer: Amazon DynamoDB.
Why this is the answer
Amazon DynamoDB is a fully managed NoSQL database service designed for high-performance, low-latency applications at any scale. It can handle millions of requests per second and petabytes of data, making it ideal for workloads requiring massive scalability and throughput. AWS Cloud9 is an integrated development environment (IDE) and is not a database service. Amazon ElastiCache for Memcached is an in-memory caching service used to improve application performance by retrieving data from fast, managed caches, but it is not a primary datastore for persistent data. Amazon Neptune is a fully managed graph database service, optimized for storing and querying highly connected data, which is a different use case than a general-purpose, high-throughput NoSQL database.
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