At which stages could you influence the quality of the product?

The quality of the frontend product can be influenced at several stages:

• Design and architecture: choosing the right technologies, modular structure, and component approaches.
• Development: writing clean, maintainable code, adhering to standards and patterns.
• Testing: writing unit, integration, and e2e tests to prevent bugs.
• Performance optimization: minimizing load, lazy loading, rendering optimization.
• Cross-browser and responsive design: ensuring proper operation on different devices and browsers.
• Code review: collaborative code checking to identify errors and improve quality.

For example, implementing automated tests and CI/CD allows for quick detection and correction of errors, significantly enhancing product quality.