which one is best waterfall or Agile methodology with justification?

Agile looks better if there is a greater chance of regular updates to specifications. The waterfall and sequential methods are simple to handle. Agile is very versatile and allows modifications at any point to be made. Project specifications in Agile will change frequently.

Agile Development:-

The biggest difference between agile vs. waterfall may be explained by stating that good planning values the waterfall model, whereas the agile approach values adaptability and participation.

There are many distinct agile software flavors that all share certain essential similarities. Included are:--

• Extreme Programming (XP).
• The Scrum.
• The Kanban.
• Lean Software Development.
• The Agile Unified Process.

There are two main components in the agile methodology: coordination and time. Agile split the plan into different deliverable sections instead of establishing a timetable for one big software development project. Such 'time-boxed' phases are referred to as 'sprints and last just a few weeks. The input from the previous process is used to schedule the next one until and sprint is over.

Core Principles of Agile Development

There are some key concepts that any agile development project can adopt with this group and a time-sensitive approach.

• Adaptability:- A value of being able to adjust design, layout, specifications, and milestones all the along the way is highlighted by agile development.
• Customer involvement:- Agile production of software involves close cooperation between both the client and the design team because of frequent changes in layout and achievable units.
• Lean development:- Agile values for production make the final product as easy as possible. If two steps rather than five can be accomplished with the same end result, agile can model the program accordingly.
• Teamwork:- Agile values teamwork directly contacting all else as we mentioned above. Teams need to constantly evaluate how the agile project will become more successful and adapt as they go. Extreme Programming (living up to its name) maintains that the idea that quality is more important than one is that developers function in pairs.
• Time:- During projects, agile development takes a different approach to time, splitting projects into some very small time units. These are all the previously mentioned "time-boxed sprints."
• Sustainability:- Agile development places emphasis on setting a realistic pace for software design rather than pressing for quicker deadlines in return for an unsolvable problem.
• Testing:- Agile techniques rely on checking in any step of the project, unlike waterfall methods where there is a separate testing phase.