In recent years, there has been a vigorous discussion on digital platform due to their emerging significance in the digital ecosystem. Despite common interests in digital platform, the comprehensive literature review on the topic is still limited. In addition, no study has examined whether there...

The COVID-19 pandemic has massively impacted the health of many people worldwide and poses significant challenges for our social, economic, and political life. Global vaccination should help the world overcome the pandemic and return to a "normal" life. In Germany, the Federal Ministry of Health...

This article investigates the fundamental value of digital platforms, such as Facebook and Google. Despite the transformative nature of digital technologies, it is challenging to value digital services, given that the usage is free of charge. Applying the methodology of discrete choice...