A motivated individual is one of the cornerstones of agile software development. Although motivation has been recognized and studied in the software development field, little research has examined motivation in agile teams. Our study aims to provide a better understanding of what motivates software developers in agile environments. We conducted a systematic review of motivators in the agile context, classifying the results using the MOCC model of software engineers' motivation. Additionally, we performed three case studies in agile companies to both confirm our findings and gather new motivators. Our results suggest that motivation in the agile context is slightly different from the overall view of motivation in software development in general.