When creating a system similar to CamelCamelCamel, it is crucial to comprehend its functionalities and organize it into various components: Data Gathering Component : This component is tasked with acquiring the latest product prices. Ideally, we would utilize Amazon's APIs if they are available. If not, we may need to resort to web scraping, which should be performed at regular intervals. Database Management System : All scraped data will be stored in a database. We can employ PostgreSQL for structured data storage and MongoDB for unstructured and semi-structured data. The price history for each product will also be recorded. Price Check & Notifications : This application will compare the current price with the user's specified threshold. If the price meets or falls below the threshold, the service will send a notification. Frontend : The User Interface where users can track products, view price histories, and configure alerts. User Management : This component will handle user registration, login, and management of their price notification preferences. To ensure scalability, we can deploy services on AWS EC2 instances and utilize load balancers to distribute the workload among them. For improved performance, we can cache frequently accessed products and their price histories using an in-memory database such as Redis.