System architecture fundamentally dictates a software product's long-term maintainability by establishing its foundational structure. A well-designed modular architecture, characterized by clear separation of concerns, simplifies tasks like debugging, updating, and feature integration, as changes in one component have minimal impact on others. Conversely, a monolithic or tightly coupled design can lead to complex dependencies and fragile codebases, making even minor modifications risky and time-consuming. Furthermore, architecture influences the system's scalability and flexibility, determining its capacity to adapt to evolving requirements and integrate new technologies without costly re-engineering. The choice of architectural patterns and technology stack also impacts the availability of skilled developers and the longevity of support, directly affecting the ease and cost of ongoing maintenance. Ultimately, a robust architecture fosters a sustainable and adaptable system, reducing technical debt and extending the software's lifespan and value. More details: https://www.dailymotion.com/user/77gvv-sky188