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copied!<p>I am not sure it is a "widespread" terminology, but in VCS (Version Control System), I know of two ways to manage a set of files needed to build a program:</p> <ul> <li><a href="https://stackoverflow.com/questions/769786/vendor-branches-in-git/769941#769941">system-based approach</a>, where the all set has a common life cycle and must be tagged as a all</li> <li>component-based approach, where individual set of files have their own life cycle, and where a meta-label references all the labels of the components to designate the all system by composition and dependencies between those components.</li> </ul> <p>The <a href="https://stackoverflow.com/questions/704855/software-design-vs-software-architecture/705013#705013">applicative architecture</a> is used to identify those components:</p> <ul> <li>functional domain and applications</li> <li>third party libraries</li> <li>frameworks</li> </ul> <p>That is where IoC comes in, since it is at the base of any framework. The problem it solves is allow you to better identify the part of your application:<br> Suppose you design a PLR (Profit and Loss) application, in charge to compute the gain and losses (position) of a trader.<br> You would quickly realize it is not a single application, but a composition of several: </p> <ul> <li>GUI</li> <li>launcher</li> <li>dispatcher (to dispatch the computation across several server, because one would not have enough memory to compute all!)</li> <li>and so forth</li> </ul> <p>You can then identify a computation framework (Ioc) which would enable you to plug-in your different modules, which then are called at the right time by your framework. </p> <p>Or you can identify purely <a href="https://stackoverflow.com/questions/212270#212362">technical frameworks</a> (KPI, logs, exception managements) which can then be used by any of your other <em>functional</em> components.</p> <p>In term of project management, that also allows you to develop each part independently, while assuring a global coordination through the VCS. </p>

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