What is linear seqential model advantages and disadvantages?

The linear sequential model, also known as the waterfall model, offers advantages such as simplicity and ease of understanding, making it suitable for projects with well-defined requirements. It facilitates structured project management and clear milestones. However, its disadvantages include inflexibility, as changes in requirements can disrupt the entire process, and it often leads to late testing, making it difficult to address issues until the later stages of development. This can result in increased costs and time if significant changes are needed after initial phases.