This book explains what factors may influence business cycle life stages. Why can some businesses experience growth life cycle stage, then going to mature life cycle stage rapidly? Otherwise, some businesses need long time to experience growth and mature life cycle stages. What factors may influence the business may reach growth life cycle stage and mature life cycle stage? Why does some businesses experience decline life cycle stage rapidly ? I shall explain these issues how and why factors may influence any kinds of business develop in their business life cycle stages. Why does COVID 19 human disease can influence global tourism and airline airplane fuel both industries to experience decline life cycle service stage easiy? I shall explains why organizations need strategy to be implemented as well as what business model means as well as why business organizations may experience different life cycle stages.