{ "employees": [ {"id": 1, "name": "Alice", "salary": 20000}, {"id": 2, "name": "Bob", "salary": 35000} ] } Below working functionality.

Upload JSON file to S3 bucket containing employee details (ID, name, salary). S3 triggers a Lambda function whenever a file is uploaded. Lambda function (written in Java) reads the JSON file and processes the data. SNS topics notify: Department A if salary = 20,000. Department B if salary > 30,000. SQS queue integrates with other services or logs.