The emerging technologies are getting adopted massively worldwide and they are finding their applications in both - private and public sector. One of the well-known technological advancements being used today is a cloud's computing. This sort of system is still in its development and every single day we are facing on the new improvements in that area of IT industry. The main challenge to the majority of emerging systems including the cloud's computing is still a security. The role of this article would be to make a comprehensive discussion how cloud's solutions work, what the critical pillars in their defense are and how we could improve our user experience applying those systems. Also, we would stress out some cloud's technology service and deployment models trying to figure out how they operate and why it's important to get familiar with those findings. Finally, it could be quite helpful to make a perspective on socio-economical impacts of this quite recent paradigm and provide some thoughts on the purpose of cloud-based systems in this modern time.