Explanation

AWS Lambda and AWS Step Functions are the correct services for creating serverless workflows:

AWS Lambda

• Serverless compute service that runs code in response to events
• Executes individual functions without provisioning or managing servers
• Can be triggered by various AWS services and events

AWS Step Functions

• Serverless orchestration service that coordinates multiple AWS services
• Creates visual workflows using state machines
• Manages the sequence and error handling of Lambda functions and other services

Why the other options are incorrect:

Amazon Connect: Cloud-based contact center service, not for workflow orchestration

Amazon Elastic Block Store (EBS): Block storage service for EC2 instances, not serverless

AWS CodeBuild: Continuous integration service for building and testing code, not workflow orchestration

Key Benefits of Serverless Workflows:

• No server management required
• Automatic scaling
• Pay-per-use pricing
• Built-in fault tolerance and error handling