Do you have an understanding of the structure and architecture of information systems?

The structure and architecture of information systems refer to the organization of system components and their interactions to solve business tasks.

An information system typically consists of several levels:

• User Interface (Frontend) — interaction with the user.
• Application Layer (Backend) — processing logic, business rules.
• Data Storage (Database) — storing and managing data.

The architecture can be monolithic, where all components are tightly integrated, or distributed (microservices), where functionality is divided into independent services.

Additionally, aspects such as integration with external systems, security, scalability, and fault tolerance are important.

Example: a web application with a React frontend, a Node.js backend, and a PostgreSQL database.