The Cloud Computing Offers Dynamically Versatile Resources Provisioned As a Service Over the Web and So Ensures Heaps of Financial Preferences to Be Distributed Among Its Adopters. In Such Environments, Security Has Considerably More Significant Job Than In Classical Network, Client– Server, Environments. Not Just That the Equivalent, Standard, Security Services Are Required (Authentication, Approval, Secretly, Integrity, Approval, and So On.), Yet Their Arrangement Must Be Offered to Clients Transparently and In an Environment Including Distributed Components and Assigned Specialists. Cloud Computing Makes Security Considerably More Significant, Yet Additionally Substantially Harder to Compose and Manage, Because of the Transparent Idea of Cloud Resources, Components, and Services. Today, Cloud Computing Architectures Offer a Cost-Productive Services Conveyed For Business, Logical and Lawful Associations. These Structures Are Used As a Rule to Understand the Cloud Part, Services, Entertainers and Interactions. Be That As It May, Few Cloud Computing Architectures Are Proposed and Used As References to Manufacture a Cloud Infrastructure. the Majority of These Models Does Not Treat and Blast Security Layers Regardless of the Way That It Exhibits the Most Significant Concerns In the Cloud. the Point of This Postulation Is to Propose Another End-To-End Reference Architecture Based on a Novel Classification of Security Issues In Cloud Computing Environment.