Full Answer Section

• Disadvantages:
  • Requires significant IT management.
  • Security responsibilities are shared, demanding careful attention.
  • Example:
    • Amazon Web Services (AWS) EC2: Many startups and enterprises use AWS EC2 to build and manage their virtual server infrastructure. For example, Netflix utilizes AWS for its streaming services, leveraging its scalability and reliability.
    • Advantage for Netflix: They can scale up or down as needed, depending on demand.
    • Disadvantage: Netflix must manage the security of its operating systems and applications.

2. Platform as a Service (PaaS):

• Description:
  • PaaS provides a platform for developing, deploying, and managing applications.
  • The provider manages the infrastructure and operating systems, while the customer manages applications and data.
• Advantages:
  • Reduces development time and complexity.
  • Provides built-in development tools and services.
  • Streamlines application deployment.
• Disadvantages:
  • Less control over infrastructure.
  • Potential vendor lock-in.
  • Example:
    • Google App Engine: Developers use Google App Engine to build and deploy web applications. Spotify uses Google Cloud Platform, which includes PaaS elements, to handle data processing and analytics.
    • Advantage for Spotify: They can focus on application development rather than infrastructure management.
    • Disadvantage: They are reliant on Google’s platform and services.
    • Salesforce Heroku: many companies use heroku to deploy web applications.

3. Software as a Service (SaaS):

• Description:
  • SaaS provides ready-to-use applications over the internet.
  • The provider manages everything, including infrastructure, applications, and data.
• Advantages:
  • Easy to use and access.
  • No infrastructure or application management required.
  • Automatic updates and maintenance.
• Disadvantages:
  • Limited customization.
  • Data security and privacy concerns.
  • Example:
    • Microsoft 365: Many businesses use Microsoft 365 for email, office productivity, and collaboration.
    • Advantage: Employees can access applications from anywhere, and the IT department doesn’t have to manage software updates.
    • Disadvantage: Organizations have limited control over the application’s features and security.
    • Salesforce CRM: Many sales teams use Salesforce CRM to manage customer relationships.

Comparison Table:

Key Considerations:

• Security: Each model has different security responsibilities. Organizations must understand their shared responsibility with the cloud provider.
• Data sovereignty: Depending on the regulations that a business must follow, they must ensure that their data is stored in a location that meets those regulations.
• Vendor lock-in: Consider the potential for vendor lock-in and choose platforms that offer interoperability.
• Cost: Evaluate the costs associated with each model, including infrastructure, software, and support.

By carefully considering these factors, organizations can select the cloud computing service model that best meets their needs.