What is the difference between "Waterfall" and "Agile"?

[bappymohammad]

Unless you can develop flawless software from the beginning, there is little fundamental difference between "waterfall" and "agile". No matter how perfect your "plan" is at the beginning, the environment may change, which is even more so.
Therefore, "waterfall" produces "somewhat completed software", while "agile" produces "basically unfinished software". It is an ambiguous expression.

However, if we were to point out a clear difference between "Waterfall" and "Agile", one would be how the "period" is determined.

In the "Waterfall" method, the amount of work required is calculated based on factors such as the size of the software, and the development period is determined dynamically.
In the "Agile" method, a deadline is set, such as one france phone number list week for one sprint, and development is repeated to fit within that amount of work.

However, in the field, even with the "waterfall" method, there are cases where a provisional release is made first in order to prioritize delivery dates.
Conversely, even with the "agile" method, in the case of large-scale system development, a release may be made after multiple sprints of development have been completed.

Another difference between the two is the closeness of collaboration between "developers" and "operators."

Compared to waterfall environments, agile environments have more frequent "planning" processes. Therefore, in agile environments, development and operations teams work closely together, allowing requests from operations to be reflected immediately.