The key challenges were dealing with customer change requests during project development, as well as the significant cost and time required to make these changes. To address these flaws in the Waterfall methodology, the Agile Software Development model was introduced in the mid-1990s.
After that, a simple working system with only a few basic functions is constructed and handed to the customer. Then, until the desired system is released, numerous more iterations/versions are implemented and handed to the customer.
The traditional waterfall methodology is difficult to apply in a real-world software development project. As a result, the Iterative waterfall model can be regarded of as including the essential modifications to the classical waterfall model in order to make it effective in real-world software development projects.
The basic software development life cycle model is the waterfall model. It’s straightforward but idealistic. This model was formerly highly popular, but it is no longer in use. But it’s crucial since the waterfall model is the foundation for all other software development life cycle models.
A programme or set of programmes containing instructions that offer desired functionality is referred to as software. And engineering is the process of creating something that fulfils a specific function and solves problems in a cost-effective manner.