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Traditional IT deployment cycle

In the past and today, the IT(-Pro) department is responsible for the stability of the systems, while the development department is responsible for creating new value.

Long release cycles, numerous tests, code freezes, night and weekend work, and many people ensure that everything works.

It's what I call silo-based development.


Everything is planned, and the first "gate" can be opened. Everything drops to the next phase. All the work, and so all the value, move in piles to the next stage.
It moves from the Plan phase to a Realize phase where all the work is developed, tested, and documented, and from here, it moves to the release phase.
All the value is released at the same time. As a result, the release takes a long time.

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