Robustness testing is any quality assurance methodology focused on testing the robustness of software. Its commercial popularity arises from its speed, reliability, robustness, resolution and small area of indentation. Stability is desirable because it provides robustness against noise. Integrated weighting improves the robustness and accuracy of survey estimates. The strengths CEGUI are its robustness and its configurability. The LPF fibers are highly sensitive to bending meaning robustness and portability is compromised. The choice of transmission parameters depends on signal robustness wanted and propagation conditions. The structural robustness of networks is studied using percolation theory. Elm is purely functional, and is developed with emphasis on usability, performance, and robustness. Resilience can be achieved by either obtaining organisational/supply chain robustness or organisational/supply chain agility. Naturally, the cost, usability, robustness, throughput, output quality, etc. This improves the descriptor's robustness to scale changes. Digital fragility can be reduced by designing a digital system for robustness. Software brittleness is the opposite of robustness. This gives a faster convergence with a similar robustness.