End-to-end testing offers several benefits:

Comprehensive Validation: It verifies the entire system or application workflow from start to finish, ensuring that all integrated components work together seamlessly as expected.

Identifying Integration Issues: End-to-end testing helps identify any integration issues between different modules, services, or subsystems, allowing teams to address them before deployment.

Ensuring Data Integrity: By testing the flow of data across the entire system, end-to-end testing ensures data integrity and consistency throughout the process, minimizing the risk of data corruption or loss.

Improved User Experience: End-to-end testing validates user interactions and workflows, ensuring a smooth and intuitive experience for end-users. This leads to increased user satisfaction and loyalty.

Detecting Business Logic Errors: It helps uncover any errors or inconsistencies in the application's business logic, ensuring that it meets the specified requirements and objectives.

Risk Mitigation: By identifying and addressing potential issues early in the development lifecycle, end-to-end testing helps mitigate risks associated with system failures, performance bottlenecks, or security vulnerabilities.

Cost and Time Savings: Detecting and fixing issues early in the development process reduces the cost and time associated with rework, regression testing, and post-production support.

Overall, end-to-end testing plays a crucial role in ensuring the quality, reliability, and performance of complex systems or applications, ultimately leading to improved customer satisfaction and business success.