Difference between revisions of "Agile vs Waterfall Work"
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| − | [[File:Cnm-digital.png|400px|thumb|right|[[ | + | [[File:Cnm-digital.png|400px|thumb|right|[[CNMCyber suite]]s]][[Agile vs Waterfall Work]] (hereinafter, the ''Lectio'') is the [[lectio|lesson part]] of '''[[Project Work Essentials]]''' [[lesson]] that introduces its participants to [[project management]] concepts. This ''lesson'' belongs to the ''CNMCT Entrance'' section of [[CNMCyber Bootcamps]]. |
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===Script=== | ===Script=== | ||
| − | :Every project can be [[Agile project|Agile]] or [[Waterfall project|Waterfall]] depending on when the [[project executing|executing]] starts -- after the [[scope baseline]] is approved or earlier. | + | :Every project can be [[Agile project|Agile]] or [[Waterfall project|Waterfall]] depending on when the [[project executing|executing]] starts -- after the [[project scope baseline]] is approved or earlier. |
| − | :Delaying the ''executing'' until the [[scope baseline]] is approved suggests the [[Waterfall model]]. | + | :Delaying the ''executing'' until the [[project scope baseline]] is approved suggests the [[Waterfall model]]. |
:For instance, building of a new house needs the baseline. The humanity has been building houses for thousands of years. The process is well-known -- the builders should lay the foundation first to put the walls second. Cost of labor, cost of material, the timeline can be predicted. At the right time, right workers can be hired and right materials can be ordered to be at the budget and on schedule. | :For instance, building of a new house needs the baseline. The humanity has been building houses for thousands of years. The process is well-known -- the builders should lay the foundation first to put the walls second. Cost of labor, cost of material, the timeline can be predicted. At the right time, right workers can be hired and right materials can be ordered to be at the budget and on schedule. | ||
| − | :On another side, development of [[ | + | :On another side, development of [[CNMCyber]] is run without baselines. No one has created ''CNMCyber'' before -- we cannot predict how it will look like, let say, 2 years from now. Volunteers lead developments in which they are interested in and when their time allows. |
:Starting the ''executing'' without the approved ''scope'' constitutes an [[Agile project]]. | :Starting the ''executing'' without the approved ''scope'' constitutes an [[Agile project]]. | ||
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:A ''project'' is [[unpredictable project|unpredictable]] when an ''unscripted-work product'' is developed in an [[uncontrollable environment]]. If the project staff selects the ''Waterfall'', they will have to guess how the development would look like. Most of the guesses may not survive the reality. | :A ''project'' is [[unpredictable project|unpredictable]] when an ''unscripted-work product'' is developed in an [[uncontrollable environment]]. If the project staff selects the ''Waterfall'', they will have to guess how the development would look like. Most of the guesses may not survive the reality. | ||
| − | :Then, the [[project manager]] would have to issue [[change | + | :Then, the [[project manager]] would have to issue [[request for change|requests for change]]; if the ''customer'' approves, disapproves, or modifies these requests fast, the ''Waterfall'' can possibly gain the speed of the ''Agile''. |
:Generally speaking, the [[Waterfall model]] needs data to save money and to shorten the ''timeline''. Without data, the ''Waterfall'' advantage is useless. In conditions of complete uncertainty, [[project work]] may be the only source of data. | :Generally speaking, the [[Waterfall model]] needs data to save money and to shorten the ''timeline''. Without data, the ''Waterfall'' advantage is useless. In conditions of complete uncertainty, [[project work]] may be the only source of data. | ||
Latest revision as of 02:56, 21 October 2023
Agile vs Waterfall Work (hereinafter, the Lectio) is the lesson part of Project Work Essentials lesson that introduces its participants to project management concepts. This lesson belongs to the CNMCT Entrance section of CNMCyber Bootcamps.
Content
The predecessor lectio is Stages of Project Work.
Script
- Every project can be Agile or Waterfall depending on when the executing starts -- after the project scope baseline is approved or earlier.
- Delaying the executing until the project scope baseline is approved suggests the Waterfall model.
- For instance, building of a new house needs the baseline. The humanity has been building houses for thousands of years. The process is well-known -- the builders should lay the foundation first to put the walls second. Cost of labor, cost of material, the timeline can be predicted. At the right time, right workers can be hired and right materials can be ordered to be at the budget and on schedule.
- On another side, development of CNMCyber is run without baselines. No one has created CNMCyber before -- we cannot predict how it will look like, let say, 2 years from now. Volunteers lead developments in which they are interested in and when their time allows.
- Starting the executing without the approved scope constitutes an Agile project.
- To choose between Agile and Waterfall, the project customer may take into consideration natures of work products and project environments.
- Scripted-work products are those work products that development process is structured and known in details. They would include constructions, non-designer clothing, and foods prepared according to recipes.
- Unscripted-work products are those work products that development process is unstructured or unknown. They would include first ever radio, first ever airplane, and first ever computer. If developers have no instructions for developing something, development of this something is unscripted.
- A project is predictable when a scripted-work product is developed in a controllable environment. The customer's choice is (a) to get the deliverable faster, but, possibly, spending more money or (b) to spend less money and get the deliverable later. The Waterfall model can be perfectly executed under these circumstances and will save money, but Agile would get results faster.
- A project is unpredictable when an unscripted-work product is developed in an uncontrollable environment. If the project staff selects the Waterfall, they will have to guess how the development would look like. Most of the guesses may not survive the reality.
- Then, the project manager would have to issue requests for change; if the customer approves, disapproves, or modifies these requests fast, the Waterfall can possibly gain the speed of the Agile.
- Generally speaking, the Waterfall model needs data to save money and to shorten the timeline. Without data, the Waterfall advantage is useless. In conditions of complete uncertainty, project work may be the only source of data.
- At the same time, many projects don't need to be either Agile or Waterfall. Let's take development of the CNMCyber.com website as an example. This project can be divided into several sub-projects, among which some like front-end and back-end can be Waterfall and the others like design, content, and SEO can be Agile.
- Creative works such as content development and design always include both scripted and unscripted aspects. Extremely-exclusive web-design can take a few years and more than a million dollars to develop. It can also take few hours and peanuts to clone or modify some existing design. Since schedules for creative works cannot be really calculated, the customer usually simply sets up their costs and/or timelines, so developers would manage their effort.
Key terms
- Agile project, Waterfall project, scripted-work product, unscripted-work product, predictable project, unpredictable project
Closing
- Waterfall work may best suit when:
- The project is predictable.
- Work product is scripted.
- Scripted work product is developed in a controllable environment
- All of the other substantive answers are correct.
The successor lectio is What Project Work Is.
