With the emergence of video-streaming applications extending beyond the entertainment section and becoming more accessible in everyday interactions. However, developing a video live-streaming application and choosing which services to use can be a hard task whether to go for a pre-built solution or build your own foundation. When deciding which services to include in your product a lot of aspects have to be taken into consideration, regarding performance and so on. The aim of this thesis is to emphasize the importance and relevancy of the development efficiency metric, including soft metrics such as maintainability and understandability. During this thesis three different video live-streaming services were chosen to be compared against each other regarding development efficiency: WebRTC, Agora and GetStream. Baseline applications were developed where each respective chosen service was implemented and further evaluated based on development efficiency. According to development efficiency, GetStream had the highest score compared to the other services and therefore should be the easiest to maintain and understand. On the other hand, WebRTC had the lowest development efficiency score and therefore should be the hardest to maintain and understand, however by choosing WebRTC you are not opting into a third-party service and therefore have more control over the implementation. Overall, it can be concluded that deciding which services to include a multitude of aspects has to be considered.

The goal of this thesis is to work up an overview about problematic relating to evaluation of use and effectiveness of IS/IT in organization. The accent in analyzing and evaluating is placed on soft metrics of IS/IT and its character. Author creates a task to specify and make clear why to evaluate IS/IT and which utility such evaluation brings. Other goal is to explain possible approaches of evaluating and the differences between them. The thesis is divided into two logical parts. First part contains theoretical base focused on soft metrics of measuring IS/IT. The second part is focused on describing practical measurement of IS/IT in organization. For full description of given area, author presents important aspects of public sector and significant law restrictions. This thesis presents one of the possible approaches to evaluate IS/IT in organization. Its benefit lies in connecting theoretical base with practical example, which author considers "best practice" in area of elaborated problematic.