The answer is A.
Amazon Simple Notification Service (Amazon SNS) sends notifications two ways, A2A and A2P. A2A provides high-throughput, push-based, many-to-many messaging between distributed systems, microservices, and event-driven serverless applications. These applications include Amazon Simple Queue Service (SQS), Amazon Kinesis Data Firehose, AWS Lambda, and other HTTPS endpoints. A2P functionality lets you send messages to your customers with SMS texts, push notifications, and email.
https://aws.amazon.com/sns/
A. Amazon Simple Notification Service (Amazon SNS): A fully managed messaging service that enables the sending of both text (SMS) and email messages from distributed applications. It allows applications to send messages to a variety of endpoints, including email, SMS, HTTP/HTTPS, and more.
B. Amazon Simple Email Service (Amazon SES): Amazon SES is focused on sending email messages, not text (SMS) messages.
C. Amazon CloudWatch alerts: CloudWatch is primarily for monitoring and managing resources, not for sending text or email messages.
D. Amazon Simple Queue Service (Amazon SQS): SQS is used for reliably transmitting messages between components but is not designed for sending text or email messages.
Amazon Simple Notification Service (Amazon SNS) is a fully managed messaging service that enables applications to send both text messages (SMS) and email notifications to subscribers. It supports multiple communication protocols, including SMS, email, HTTP/HTTPS, and Amazon SQS.
Amazon Simple Notification Service (Amazon SNS) sends notifications two ways, A2A and A2P. A2A provides high-throughput, push-based, many-to-many messaging between distributed systems, microservices, and event-driven serverless applications. These applications include Amazon Simple Queue Service (SQS), Amazon Kinesis Data Firehose, AWS Lambda, and other HTTPS endpoints. A2P functionality lets you send messages to your customers with SMS texts, push notifications, and email.
https://aws.amazon.com/sns/
A - Amazon Simple Notification Service (Amazon SNS) is correct.
"Amazon Simple Notification Service (Amazon SNS) sends notifications two ways, A2A and A2P. A2A provides high-throughput, push-based, many-to-many messaging between distributed systems, microservices, and event-driven serverless applications."
Reference: https://aws.amazon.com/sns/
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