Ten time of life ago, when I was an R&D Team Leader next to VISA, we had a totally organized software system change for the better process!
Everytime a new ability or phase had to be developed, we would go done this selfsame activity -
Marketing would devise an MRD (Marketing Requirements Document). Typically a 10-20 pages document, outlining what commerce wants to see, near a few sketches of how they would similar to the factor to slog.
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My job as the R&D Team Leader was to second look the script near the commerce department's product decision maker and in swivel devise a new papers titled FRS (Functional Requirement Specification). The FRS described the systematic trivia and finishing to verbalise the sought after functionality.
I would get together near every unattached engineer, examination the FRS and back them keep in touch yet different writing that describes the unit order description and unit of measurement carrying out tests. While enhancement was in progress, our in-house QA (Quality Assurance) section would make two sets of documents for whitebox and blackbox trialling.
We would release a new physique all 3 months and the unchain act interested various another documents and steps, all in moderation planned to minimize mistakes.
Everybody (aside of the QA culture) detested this scheme. For whatsoever motivation QA loved it. Said it makes their job easier. But because it took so lasting to get a new side full developed, well-tried and deployed, recurrently we would brainwave ourselves deploying a part/functionality that is no longer necessary. We uncomprehensible the framing of opportunity, the client went distant or Marketing denatured their be bothered.
This was all hindmost in 1997.
Today everything has exchanged. Time to souk. Time to fortune. Increasing celerity of transfer in the online international all gave offset to Web 2.0. Ajax. And a new package movement methodological analysis attitude called Extreme Programming.
At we no longest jot 5 documents to get a new feature deployed. We no longer loaf for blackbox and whitebox green-light from QA earlier going in performance. And we no longest omit the pane of opportunity.
Extreme Programming is in use so ably for us that we came up with a shocking "5% approval for all lone day we're late" penalty group when treatment with clients. Yikes! My old administrator would lusus naturae out stern in the life of 1997 wherever all solitary hang over was inescapable to be late and adding up further developers to an once past due labor newly made it an even bigger farce.
So what is all about?
In short-term it finances secret writing at the speediness of musing. Whenever something needs to get done, we shatter it downhill to the littlest units workable (OOP), use extant objects whenever possible, sudden section audition and on to the productivity dining-room attendant.
A unattached document describes what requirements to be finished and the drudgery is cracked fallen to various engineer, all accountable on committal to writing and deploying their section of the hang over.
Initially this sounds similar hue and cry or a formula for disaster, nevertheless erstwhile the art of disproportionate programing is mastered, the end consequence is swift web 2.0 applications launched inwardly weeks as opposing to months/years.
Extreme Programming is roughly speaking indicate note near the customer, it's in the order of jiffy changes with flash production to productivity state of affairs. It's roughly speaking simply acquiring material possession done, near no else bureaucracy and no further stairway.
For us - we survive and take breaths XP and we'll never go hindmost.