Update README.md

Author: ap-dev-github

README.md

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 ## **Atithidev DB API – Scalable & Cost-Optimized Serverless Backend**
 > **Atithidev DB API** is a highly scalable, cost-optimized, and fully serverless backend designed for managing profiles and reviews effortlessly. Built on **AWS Lambda** and **MongoDB Atlas**, it enables efficient data handling while keeping infrastructure costs near zero. Whether you're handling a few requests or millions, this API automatically scales up or down to meet demand.  
 ## 🔹 Key Features  
-- **Zero infrastructure management**  
-- **Scales automatically with traffic**  
-- **CI/CD optimized for smooth deployments**  
-- **Secure & production-ready** with rate-limiting, logging, and monitoring 
+- **Zero Infrastructure Management** – No need to manage servers or manual scaling.  
+- **Automatic Scaling** – Seamlessly scales up or down based on traffic.  
+- **Cost-Efficient** – Scales down to near-zero cost when idle, with AWS API Gateway & Lambda handling the load.  
+- **CI/CD Automation** – Fully optimized CI/CD pipeline for smooth deployments via GitHub Actions.  
+- **Secure & Production-Ready** – Includes rate-limiting, logging, and monitoring with AWS CloudWatch.  
+- **Robust API Capabilities** – Fetch reviews, post reviews, and find hosts based on parameters like state or ID.  
+- **Type-Safe Development** – Built using TypeScript for better maintainability.  
+- **Testing & Linting** – Uses Jest for API testing and ESLint for code quality enforcement.  
+- **Database Security** – MongoDB Atlas with IP whitelisting to restrict unauthorized access.  
+- **Rate Limiting** – Prevents abuse and DDoS attacks, ensuring API stability.  
+- **Secure Key Management** – Uses GitHub Secrets Manager to protect API keys and environment variables.  
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 ## 💰 Cost Efficiency & Scalability
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-## ✨ Features
-- Fetch reviews, post reviews, and find people (hosts) based on various parameters like state or ID.
-- **Fully serverless** with AWS Lambda ⚡
-- Uses **MongoDB Atlas** as the database 🌴
-- **CI/CD automation** with GitHub Actions 🤖
-- **TypeScript** for type safety 💎
-- Linting Test
-- **Jest** for API endpoint testing ✅
-- **Rate limiting** to prevent abuse ⚖️
-- **Logging and monitoring** with AWS CloudWatch 📊
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 ## 🛠️ Tech Stack
 - **Node.js** (Runtime: 18.x) 💚
 - **TypeScript** (Type-Safe Development) 💎