Which AWS service or feature can the company use to reduce the database response time to microseconds?
Amazon ElastiCache
DynamoDB Accelerator (DAX)
DynamoDB auto scaling
Amazon CloudFront
Explanations:
Amazon ElastiCache is a caching service that can reduce latency for frequently accessed data, but it is not specifically designed to reduce DynamoDB response time to microseconds.
DynamoDB Accelerator (DAX) is a fully managed, in-memory caching service for DynamoDB that is designed to provide microsecond read response times. It is the best option to reduce database response time.
DynamoDB auto scaling automatically adjusts the read and write capacity, but it does not reduce the response time to microseconds; it focuses on capacity management.
Amazon CloudFront is a content delivery network (CDN) used to distribute content globally, but it is not relevant for reducing DynamoDB response time to microseconds.