Which service allows you to engage customers through push notifications and SMS?

The correct choice is Amazon Pinpoint because it is specifically designed for engaging customers through various channels, including push notifications, SMS, and email. Amazon Pinpoint provides a powerful framework for sending targeted messages to a large audience, making it an ideal solution for marketers and developers looking to connect with users effectively.

This service enables businesses to create and manage marketing campaigns based on user behavior and preferences, allowing for personalized communication that can lead to increased customer engagement and retention. Through its analytics capabilities, organizations can also track the performance of their messaging campaigns, giving insights into user behavior and the effectiveness of different communication strategies.

In contrast, Amazon SES (Simple Email Service) is focused solely on sending and receiving emails, while Amazon AppFlow is a service that facilitates data transfer between AWS services and SaaS applications, not customer engagement through notifications. AWS Batch is primarily used for batch processing workloads and does not relate to customer engagement. Thus, Amazon Pinpoint stands out as the comprehensive solution for managing customer interaction through multiple notification channels.