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The core technologies underlying software configuration managementhave changed little in more than two decades. Developmentorganizations struggle to manage ever­ larger software systems with tools that were never designed to handle them. Their development processes are warped by the inadequacies of their building and version management tools. Developers must take time from writing and debugging code to cope with the operational problems thrust upon them by their build system's inade­ quate support of large-scale concurrent development. Vesta, a novel system for large-scale software configuration management, offers a better solution. Through a unique integration of building and version management facilities, Vestaconstructs software of any size repeatably, incrementally, and consis­ tently. Since modem software development occurs worldwide, Vesta supports con­ current, multi-site, distributed development. Vesta's core facilities are methodologi­ cally neutral, allowing development organizations a wide range of flexibility in the way they arrange their code repositories and structure the building of system com­ ponents. In short, Vesta advances the state of the art in configuration management.