Sustainability may be explained as featuring the existing requires without the need of compromising the requires of the future generations to fulfill theirs. It has 3 pillars: economic, environmental and social. You can browse the preface and Chapter one of Yin's guide listed here. See the open up-entry content articles https://case-solution86556.pointblog.net/5-easy-facts-about-case-study-help-described-82125578