## Online marketplace architecture challenge
Hello, candidate.

This challenge requires you to use a tool like https://excalidraw.com/ to draw and define some diagrams to explain how would you design a system.

# Objectives
Design an online marketplace application where users can browse and purchase items. The developer should create a high-level block diagram of the entire system, including the main components and their interactions. Identify the main modules or packages that will be needed to organize the code.

The application has the following URL structure:

- homepage
- List of featured items and categories
- category page
- List of items in a specific category, with the ability to filter and sort by various attributes
- item detail page
- Detailed information about an item, including price, reviews, and a form to add the item to the cart
- cart page
- A summary of items in the cart and the total cost, with the ability to proceed to checkout
- checkout page
- A form to enter shipping and payment information, with the ability to review and submit the order

## System architecture
Create a high-level block diagram of the entire system, including the main components and their interactions.
Define the data sources and how the data will be fetched. Determine if the developer will develop APIs or do everything on the client side.
## Code structure
Identify the main modules or packages that will be needed to organize the code.
Provide a brief explanation of how the codebase will be organized, including the design patterns used and the way the different components interact with each other.
Explain any additional details that you think will be important for the overall system design.
## QA and delivery
Define a visual representation of a simple CI/CD pipeline that could sustain this project.
Explain how the system will be tested and how it scales.
## Bonus
Identify and explain how the system can be made more resilient and fault-tolerant.
Identify and explain any security concerns and how they will be addressed.