一个关于软件技术发展的ppt，非常好的阐述了中间件等关键概念及行业的现状以及发展情况，对于掌握分布式计算等相关领域的知识和进行学习大有裨益。-With regard to the development of a software technology ppt, very good set of middleware and other key concepts and the current situation and developments in the industry, for control of distributed computing and other related areas of knowledge and learning boost.