A company’s on-premises call center hardware is aging and experiencing downtime. The call center sends an automated, interactive two-way text survey to customers after calls. The company wants to migrate to AWS to improve reliability with the LEAST ongoing operational overhead. Which solution is best?

The correct solution leverages Amazon Connect for the call center, as it's a fully managed, cloud-based contact center service that directly replaces on-premises hardware and offers high reliability with minimal operational overhead. For the interactive two-way text surveys, Amazon Pinpoint is the ideal choice because it's designed for targeted, interactive customer communication, including SMS, and can manage two-way messaging workflows. Amazon SNS is less suitable for interactive two-way surveys as it's primarily a messaging service for application-to-application or application-to-person communication, lacking built-in features for managing interactive survey flows. Migrating existing software to EC2 instances in an Auto Scaling group would increase operational overhead significantly compared to managed services like Connect and Pinpoint, as it requires managing operating systems, scaling, and the application itself. Replacing the call center entirely with Amazon Pinpoint is incorrect because Pinpoint is a customer engagement service, not a full-fledged call center solution.