Faced with the need to efficiently run a cron job to fetch users nearing the end of their trials and insert them into a customer database, the author explores the use of AWS Lambda as a cost-effective and scalable solution. AWS Lambda's pay-per-use model and cloud environment make it a suitable alternative to traditional server-based implementations, which can be costly and inefficient for tasks that run briefly and infrequently. By utilizing the Serverless framework and AWS ScheduledEvents, the author demonstrates how to set up and deploy a cloud-based function that automates this process, allowing for easy scheduling and execution without the overhead of managing server infrastructure. This approach highlights the advantages of serverless computing, particularly for microservices that require minimal setup and operational costs, emphasizing its potential for broader applications in the future.