PROJECT TITLE :

Pliability and Viable Systems: Maintaining Value Under Changing Conditions

ABSTRACT:

As systems become a lot of complex and have longer lifespans, they will doubtless encounter contextual variation or be themselves subject to change. Systems would like to not solely be possible however viable yet. That's, they have to be ready to continue to supply worth in spite of any potential exogenous or endogenous changes. Viability has been outlined for different domains, but it's not been outlined for engineered systems. This paper defines what it means that for an built system to be viable and shows that it's related to, however completely different from, other existing “-ilities” like survivability and reliability. This paper additionally addresses the necessity to make sure that endogenous changes don't inadvertently cause unintended interactions that hurt the system overall. A replacement -ility, i.e., pliability, is introduced, which specifies the bounds on how a system can change, without “breaking” or violating an architecture that was supposed and validated. Like changeability, pliability will increase robustness by permitting systems to voluntarily amendment in response to dynamic contexts and increases survivability by increasing the likelihood that unintentional changes are still within the set of allowable architecture-defined instances. It conjointly distinguishes allowable changes from those that would need additional validation, reducing the effort needed to get those changes approved by a diverse set of stakeholders.