The intention of this master thesis is the presentation of the selected trends in CRM information systems. The opening part is aimed at management of customer relationships, which are analysed in terms of marketing and ICT technologies. This part also introduces the readers to the architecture of CRM information systems and to possible ways of implementing of these solutions. Moreover, it presents some vendors of CRM solutions that are leaders on the market. The following part is solely focused on the trends in CRM information systems. These trends are primarily related to cloud computing, social CRM and the internet of things. The next part of this thesis applies the findings from the previous chapters in a practical way. It deals with a c...