Software Process Improvement (SPI) methodology is defined as definitions of sequence of tasks, tools and techniques to be performed to plan and implement improvement activities. Well-known SPI frameworks like CMMI and ISO/IEC 15504 define SPI methodologies in an abstract manner. We developed an SPI methodology, BG-SPI, providing a ready-to-use SPI scheme with guidance on an iterative SPI lifecycle, composed of task definitions with details on resources, tools, roles, participation of groups,

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... cess assets, and other process specific supporting items. Utilizing BG-SPI with support of SPI experts, organizations can easily plan and manage SPI lifecycle. BG-SPI methodology is applied over 10 organizations with different size, sectors and SPI motivations. This paper explains BG-SPI and provide insight on how a detailed SPI methodology helps the SPI projects in various aspects.