DevOps adoption should be followed by a solution provider?

To elucidate the primary distinction between two common approaches to system development, an illustrative example can be presented. Please provide an overview of the primary benefits and drawbacks associated with each tactic?

A system's scope and complexity can change as the project progresses. A project that may seam feasible one day, may become unfeasible later. Integrating feasibility checkpoints into the SDLC process is a best practice to ensure that systems' success.  -True -False

b) Consider the following ten usability heuristics: (UH1) Visibility of system status; (UH2) Match between system and real world; (UH3) User control and freedom; (UH4) Consistency & standards; (UH5) Error prevention; (UH6) Recognition rather than recall; (UH7) Flexibility and efficiency of use; (UH8) Aesthetic and minimalist design; (UH9) Help users recognize and recover from errors; (UH10) Help and documentation. i) To indicate that a new email has arrived, the system shows the image of a closed envelope. Which usability heuristic is this design satisfying? Justify your answer. ii) In a website, the navigation buttons are always located at the top of every page. Which usability heuristic is this design satisfying? Justify your answer.

Explain the key differences between two common approaches to system development. Exactly what are the primary benefits and drawbacks of each strategy?