The fast moving area of mobile telecommunication forces companies to deliver functionality with increasing speed to customers. To deal with these challenges, Ericsson AB cre- ated a software process called Streamline Development(SD); which bridges the gap between long term thinking and agile development. SD is a process inspired by agile and lean methodologies, focusing on small efficient teams with an end-to-end responsibility of development, short life cycles, and continious code integration. The purpose of streamline is to take advantage of the benefits of shorter time to market, and to have a more flexible development set-up to aid the possibility to make changes at anytime. The goal is to get to faster development of products with higher quality. This article investigates SD and searches for different factors that could have an impact on the development process of a feature and extend the lead time. The paper will try to answer which factors restrict speed in Streamline Development? The results are 34 factors that restrict speed in SD. These factors are divided into three areas and further divided into 12 cate- gories. The research was conducted as a case study at Ericsson AB as a part of the bachelor thesis project course at the IT- University of Gothenburg during the spring of 2010.