CC BY-NC 4.0Pape, SebastianSebastianPapeTasche, DanielDanielTascheBastys, IuliaIuliaBastysGrosz, AkosAkosGroszLässig, JörgJörgLässigRannenberg, KaiKaiRannenberg2022-03-149.1.20192018https://publica.fraunhofer.de/handle/publica/40299410.18420/sicherheit2018_01In this paper we apply privacy by design in e-commerce. We outline the requirements of a privacy-aware online shopping platform that satisfies the principle of data minimization and we suggest several architectures for building such a platform. We then compare them according to four dimensions: privacy threats, transparency, usability and compatibility with existing business models. Based on the comparison, we aim to build the selected platform in the next step.en004670conference paper