This thesis was written for YIT, which is a construction company with over 10,000 employees and operations in 11 countries. YIT develops and builds homes, business premises and infrastructure and provides services around these areas as well as paving.

The case company is developing new concepts and services to meet customer expectations of better living in sustainable cities. Development must be efficient yet explorative. A new agile way of development was taken into use by a small and innovative unit in order to gain experience with it and eventually spread the model to the whole company if the results were seen as promising.

The objective of the study was to develop a process around the Scaled Agile Framework, which was introduced to large enterprises as a development methodology for testing ideas more quickly and delivering results that bring value. Additionally, a toolkit, a set of tools, were developed together with the process to take the new way of working into the organization and to make it stick. Such tools were definitions, templates, checklists and establishing a calculation for defining the business value.

The study was carried out using the best practices of research strategy using participating methods and quick feedback. The toolkit evolved as tools were taken into practice, tested and modified, keeping in mind that the toolkit was supposed to serve the whole company in the future and could also be taken into use in support functions such as HR and Finance.

The outcome satisfied the case company as it introduced a custom-tailored way of conducting development using SAFe methodology as a base. The toolkit was taken into use and used as training material for “How do we develop in YIT and how do you get started