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A foundational introduction to cloud computing concepts, focusing on the key principles of on-demand self-service, network access, and the relationship between these elements in modern it infrastructure. It also explores different cloud models (public, private, and hybrid), their advantages and disadvantages, and the shared responsibility model in cloud security. The document further delves into the differences between iaas, paas, and saas, providing examples and comparing their features, control levels, flexibility, and cost structures. It concludes with a discussion of consumption-based models and their relevance in cloud computing.
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Create a virtual machine on Microsoft Azure
Public Cloud
Private Cloud
Hybrid Cloud
vehicles Timing of Expense Upfront, one-time cost^ Ongoing, recurring costs
Impact on Value Asset value depreciates over time Expenses are consumed immediately Accounting Treatment
Capitalized on the balance sheet and depreciated over time
Expensed immediately on the income statement
Tax Implications Depreciation can be deducted over time, reducing tax liability
Expenses are typically deductible in the current period
Consumption-Based Models
Iaas vs PaaS vs Saas
Feature IaaS Infrastructure as a Service)
PaaS Platform as a Service)
SaaS Software as a Service)
What it provides
Basic building blocks: servers, storage, networking
Platform for development & deployment: OS, databases, middleware
Ready-to-use software applications
Control level
Highest - you manage OS, middleware, applications
Moderate - you manage applications and data
Lowest - you just use the application
Flexibility
Most flexible - customize everything
Less flexible, but easier to deploy applications
Least flexible, but easiest to use. Pay as you go more matters for SaaS, even though itʼs available for all three of these options.
Examples
AWS EC2, Google Compute Engine, Azure Virtual Machines
AWS Elastic Beanstalk, Heroku, Google App Engine
Google Workspace, Salesforce, Dropbox