ABSTRACTCloud computing is expressively leading today’s IT enterprises towards achieving their business goals alongside providing utmost customer satisfaction with very lower cost with respect to infrastructure, platforms, and software perspectives. While these infrastructure-related hassles handled by a CSP, cloud service provider, organization needs to completely focus on the service to their customers. Being a user of cloud services from CSP, organizations need not have high technical potential with respect infrastructure and platforms. Whereas, Cloud Service Users need to have expertise on the functionality provisioning/servicing based on their customer requirements. Alongside to its benefits, cloud computing is also comes with various challenges. Among all, security being a leading threat. This paper provides the current scenario of cloud security.Keywords: cloud computing, architecture, characteristics