[405-470] COMPSCI 316 L01C - Wed 16 Oct 02_00 PM (copy)

Chapter 1: Introduction

• Course Announcement

  • Assignment 3 deadline extended to Sunday due to student inquiries.

  • Set evaluation completion at ~40%; bonus marks available for submissions.

  • Set evaluation deadline is next Wednesday.

Chapter 2: Cloud Security

• Overview of Cloud Security

  • Introduces basic concepts of cloud computing and related security aspects.

  • Definition by NIST: Cloud computing as a model for ubiquitous and convenient access to a shared pool of configurable computing resources.

  • Key Benefits:

    • Cost-effective resource sharing.

    • Quick allocation and deallocation of resources (e.g., handling traffic spikes).

Essential Characteristics of Cloud Computing

• 1. Broad Network Access

  • Services accessible via standard mechanisms on various devices (laptops, smartphones).

  • Example: Google Drive accessible anywhere with internet.

• 2. Rapid Elasticity

  • Ability to scale resources up or down based on demand (e.g., during major online sales).

• 3. Measured Service

  • Automatic resource metering provides transparency for both providers and consumers.

• 4. On-demand Self-service

  • Consumers provision resources automatically without provider interaction.

• 5. Resource Pooling

  • Multi-tenant model allowing multiple consumers to share resources dynamically.

Chapter 3: The Cloud Service Models

• Cloud Service Models

  • Software as a Service (SaaS):

    • Provides software applications over the cloud.

    • Benefits include no need for software installation or maintenance. Example: Google Workspace, Netflix.

  • Platform as a Service (PaaS):

    • Offers a platform for consumers to develop and deploy applications. Example: Microsoft Azure, Google App Engine.

    • Shared responsibility for security between consumers and providers.

  • Infrastructure as a Service (IaaS):

    • Provides virtualized computing resources. Example: Amazon EC2.

    • Consumers manage everything above the infrastructure level, including OS and applications.

Chapter 4: Cloud Deployment Models

• Public Cloud:

  • Owned and operated by third-party providers, accessible to the public. Examples: AWS, Google Cloud.

  • Main advantages include cost efficiency and scalability.

• Private Cloud:

  • Established within an organization’s infrastructure. Offers more controlled environment and better security.

• Community Cloud:

  • Shared among several organizations with similar goals, e.g., healthcare.

• Hybrid Cloud:

  • Combination of public and private models, ideal for sensitive and non-sensitive data management.

Chapter 5: Cloud Security Concerns

• Security Aspects

  • Availability: Ensures continuous access to data and services.

  • Data Loss Prevention: Proper data retention and disposal practices are crucial.

• Consumer Responsibility:

  • Application-level security is primarily the consumer's responsibility, while physical security is maintained by the providers.

Chapter 6: Conclusion

• Recap of key cloud concepts and models discussed in the lecture.

• Emphasis on the importance of cloud security as organizations migrate to cloud services.