Taxonomy for Complexity Estimation in Agile Methodologies: A Systematic Literature Review

Currently, software development teams use different methods to estimate their projects, in Scrum, there are different methods to estimate the value and complexity of a user story. However, these methods are not accurate and most of them depend on many attributes that sometimes are not contemplated or are unknown by the development team. Although Planning Poker has many benefits, it has been found that this method is efficient mostly for experience teams, since the estimation will always depend on the observation of an expert and his experience. On the other hand, without a standard set of attributes for describing complexity, subjectivity problems remain when estimating user stories. This study presents a systematic literature review in which identifies the attributes that influence the complexity estimation in user stories.