Cloud computing has evolved from cutting-edge technology to a best practice for businesses across industries. However, compliance with regulatory mandates and addressing security challenges in the cloud environment remain significant concerns. This thesis aims to explore the compliance, regulatory, and security challenges associated with cloud computing, with a particular focus on the differences in regulatory frameworks between an Asian country (India) and a European country (Sweden). Additionally, the study delves into the forensic investigation challenges in terms of evidence collection in the cloud environment. The research methodology involves studying the available literature on regulatory rules and cloud forensics, conducting surveys with cloud customers, experts, and cloud service provider (CSP) professionals, and proposing possible solutions and recommendations to overcome the identified challenges. By addressing these issues, this research contributes to a comprehensive understanding of the impacts of compliance regulations on cloud and IP Telephony services and the security and forensic investigation challenges in cloud platforms.