Details:

Added HLD.md
added PsipherComplete.png
added PsipherSwagger.png
updated README.md

Author: master-fury

HLD.md

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+# `High Level Design 📄 of Psipher 🔐`
+***
+## `For Deployment Purpose`
+![Psipher_Complete](PsipherComplete.png)
+
+##### This architecture is fully based on serverless model, hence there is very less maintenance cost and cost effective.
+
+### Why these?
+- **Route 53** - This is optional for our Psipher. Only use when you have a custom domain. It is used to map custom domain(example.com) to application domain(randomly generated). It is a highly available and scalable Domain Name System Service.
+
+- **CloudFront** - Helps for content delivery. It also saves Psipher from any cyber attack. It has low latency and uses static caching to achieve it.
+- **S3** - It is used for CI/CD for backend and frontend application.
+- **AWS Amplify** - It is used to deploy react application and maintain authenticity of users. It is also highly scalable and helps to store data securely.
+- **ReactJS** - This is used to build user interface (frontend). It is open source JavaScript Library.
+- **Cognito** - This is for user authentication at both backend and frontend which include JWT.
+- **API Gateway** - It takes all API calls from react application and route them to lambda handlers.
+- **Lambda** - This is a serverless function in which our spring boot (backend) application resides.
+- **DynamoDB** - DynamoDB is a serverless DB in which user data is stored.
+- **CloudWatch** - Used for metric and log monitoring.
+- **VPC** - It helps Psipher components to establish a logical isolated section from users.
+
+***
+
+## `For Testing Purpose`
+![Psipher_Swagger](PsipherSwagger.png)
+
+- **SwaggerUI** - Used for API testing and documentation for our backend. This resides on Lambda.

PsipherComplete.png

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 This project was bootstrapped with [Create React App](https://github.com/facebook/create-react-app).
 
+## High Level Design 📋 [Click here](HLD.md)
+
 ## Available Scripts
 
 In the project directory, you can run: