Explain cloud system architecture suitable diagram?

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explain cloud system architecture suitable diagram?

@sorumatikbot

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Explain cloud system architecture with a suitable diagram?

Answer:
Cloud Computing refers to the on-demand availability of computing resources (like servers, storage, and applications) over the internet. A Cloud System Architecture outlines how these resources are organized, from the underlying physical hardware to the software services consumed by end-users.

Core Layers of a Cloud System

  1. IaaS (Infrastructure as a Service)

    • Provides virtualized computing resources over the internet (servers, storage, network).
    • Examples: Amazon EC2, Google Compute Engine, Microsoft Azure Virtual Machines.

  2. PaaS (Platform as a Service)

    • Offers platforms for developing, running, and managing applications without dealing with the underlying infrastructure.
    • Examples: Google App Engine, Heroku, Microsoft Azure App Service.

  3. SaaS (Software as a Service)

    • Delivers ready-to-use software over the internet.
    • Examples: Gmail, Office 365, Salesforce.

Example Cloud Architecture Diagram

                +--------------------+
                |   SaaS Layer      |  <-- (End-user applications)
                | (Software Access) |
                +--------------------+
                        |
                        v
           +----------------------------+
           |      PaaS Layer           |  <-- (Application development,
           | (Tools and platforms)     |       testing, deployment)
           +----------------------------+
                        |
                        v
     +-------------------------------------+
     |           IaaS Layer               |  <-- (Virtual machines,
     | (Servers, storage, networking)     |       storage, networking)
     +-------------------------------------+
                        |
                        v
           +-----------------------+
           | Physical Hardware    |
           | (Data centers,       |
           | servers)             |
           +-----------------------+

In this diagram, users interact mostly with the top SaaS layer. Developers build and deploy applications on the PaaS layer, which runs on top of the IaaS layer. The foundation of all these layers is the physical hardware in data centers.

Important Components to Consider

  • Automation and Orchestration: Tools like Kubernetes automate the deployment and scaling of applications.
  • Security: Includes encryption, identity management, and compliance with standards (e.g., ISO27001, GDPR).
  • Backup and Recovery: Regular data backups and disaster recovery plans to ensure business continuity.
  • Scalability: Dynamic allocation of resources based on demand.
  • Load Balancing: Efficiently distributes network traffic across multiple servers.

Table: Cloud System Layers and Their Characteristics

Layer Definition Examples
IaaS Virtualized computing resources, including servers, storage, network Amazon EC2, Google Compute Engine, Azure VM
PaaS Tools and environments for deploying and managing applications Google App Engine, Heroku, Azure App Service
SaaS Fully functional, web-hosted software products for end-users Gmail, Office 365, Salesforce

Reference:

  • NIST SP 800-145, “The NIST Definition of Cloud Computing”

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