Cloud Application Deployment

Considerations for Deployment

• Determine who will access the application and from where.
• Public Cloud: Suitable for applications accessible by anyone on the internet.
• Private Cloud: Suitable for internal-use applications, often deployed to a virtualized local data center.
• Hybrid Cloud: Utilizes both public and private clouds, often used in organizations.

Cloud Service Models

1. Software as a Service (SaaS)

• On-demand software with a login screen accessed via a browser.
• The provider manages and hosts the application and data.
• Users do not install or manage the software locally.
• Centralized management by the provider.
• Example: Google Mail, Office 365.

2. Infrastructure as a Service (IaaS)

• Also known as Hardware as a Service (HaaS).
• Provides the necessary computing resources for users to deploy and manage their own applications.
• Users manage software installation, upgrades, and data security.
• More control over data access and security.
• Example: Web service providers offering server time to users.

3. Platform as a Service (PaaS)

• Provides tools for users to develop and customize their own applications.
• The cloud provider manages the underlying infrastructure.
• Users focus on building and maintaining applications.
• Example: Salesforce.com provides building blocks for custom app development.

Cloud Responsibility Matrix

• On-Prem: Customer manages everything from data to physical data center.
• IaaS: Cloud provider manages the physical data center, network, and host; the customer manages everything else.
• PaaS: Shared management of network controls, applications, and identity infrastructure.
• SaaS: The provider is responsible for applications, while the customer manages accounts, devices, and data.

Choosing the Right Cloud Model

• Depends on desired infrastructure type and level of responsibility.
• Evaluate the type of control and management needed for your application.