🚀 How I Built a Serverless Expense Tracker Using AWS Lambda and Amazon S3 - No Server Required

🚀I have built a fully serverless expense tracking pipeline on AWS no servers, no manual work, just pure cloud automation. The problem: combining monthly expense CSVs every year is tedious and error-prone. So I automated the entire process. 🪣 Amazon S3 (Simple Storage Service) Amazon S3 is a cloud-based object storage service that stores and retrieves any amount of data from anywhere in the world. It can also watch for new files and automatically notify other AWS services when something is uploaded. 💡 Think of it as a smart cloud hard drive the moment a CSV lands in S3, it wakes up Lambda automatically. ⚡ AWS Lambda AWS Lambda is a serverless compute service that runs your code in response to events, without provisioning or managing any servers. You only pay for the milliseconds your code actually runs. 💡 Think of it as a worker who sleeps until you need them triggered, runs the task, goes back to sleep. No server running 24/7, no idle costs. 🔐 AWS IAM (Identity & Access Manage