Opening the book…
Introduction
In this chapter, we will establish the foundation of Cloud Computing.
- Define cloud computing and explain how it transforms IT from a capital investment into an on-demand, pay-as-you-go utility service.
- Identify and explain the key business drivers for cloud adoption, including cost efficiency, scalability/elasticity, business agility, improved collaboration, operational efficiency, and reliability/security.
- Distinguish between the three core cloud service models — IaaS, PaaS, and SaaS — describing what each provides, the level of customer vs. provider responsibility, and when each is most appropriate.
- Describe the broader "Everything-as-a-Service" (XaaS) ecosystem, including emerging models like FaaS (serverless), CaaS, and DBaaS, and explain how organizations compose solutions from multiple service types.
- Explain the shared responsibility model for cloud security, describing how security duties are divided between the cloud provider and the customer across different service models.
- Describe the foundations of cloud governance, security, and compliance, including the role of policies, identity and access management, encryption, and regulatory frameworks (e.g., GDPR, HIPAA, PCI DSS).
- Analyze real-world case studies — such as Netflix, Zoom, Amazon, and Google — to illustrate how cloud computing enables scalability, resilience, innovation, and new business models.
- Evaluate the strategic business impact of cloud computing, explaining how it can drive revenue growth, enable global reach, support business continuity, and shift organizational focus from infrastructure management to core competencies.
- 1.1: Introduction to Cloud Computing in a Business Context
- This page discusses cloud computing as a model for on-demand access to shared IT resources via the internet, offering benefits such as agility, scalability, and cost-efficiency. With nearly 90% of companies using cloud services and projected economic value reaching $3 trillion by 2030, the chapter will examine the business case for cloud computing, the XaaS model, governance, security, and successful real-world case studies of cloud adoption.
- 1.2: Key Drivers and Motivations for Adopting Cloud Computing
- The chapter explains why organizations choose to move to the cloud by outlining the core value propositions.
- 1.3: “Everything-as-a-Service” Models- IaaS, PaaS, SaaS and Beyond
- In this section, we explain the main service models – Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS) – and touch on further extensions of the XaaS paradigm.
- 1.4: Platform as a Service (PaaS)
- This chapter describes a cloud computing model where a provider delivers a fully managed platform and runtime environment. The key takeaway is that PaaS abstracts away the underlying infrastructure—including servers, operating systems, and development tools—allowing developers to focus exclusively on writing their application code, managing data, and configuring their application.
- 1.5: Infrastructure as a Service (IaaS)
- The chapter provides a comprehensive overview of the IaaS cloud computing model.
- 1.6: Software as a Service (SaaS)
- This chapter explores Software as a Service (SaaS), a ubiquitous cloud model that gives businesses access to powerful, best-in-class applications without capital investment. By simply subscribing, companies can rapidly deploy tools and level the playing field with larger enterprises.
- 1.7: Beyond IaaS, PaaS, and SaaS - The XaaS Ecosystem
- Delving beyond traditional cloud models, this chapter introduces the "XaaS" ecosystem, where specialized services offer greater business agility and efficiency. It examines how companies can leverage these diverse "as-a-service" offerings while navigating the crucial aspects of governance and integration.
- 1.8: Foundations of Cloud Governance, Security, and Compliance
- This chapter explores the foundational pillars of cloud adoption: governance, security, and compliance, which are crucial for mitigating risks. It outlines the key principles and practices for controlling costs, securing data, and adhering to regulatory requirements in a cloud environment.
- 1.9: Real-World Case Studies and Use Cases
- Real-world cloud computing use cases and case studies from Netflix, Zoom, Amazon, and Google.
This page titled 1: The Business Case for Cloud Computing was last modified on Tue, 22 Sep 2026 21:13:17 GMT and is shared under a CC BY 4.0 license and was authored, remixed, and/or curated by Felix Amoruwa.
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