Cloud Computing
Exam Power Notes — Quick Revision Guide
1. Cloud Computing
Cloud computing delivers computing resources such as servers, storage, databases, networking, and software over a
network.
2. Key Characteristics
On-demand access, resource sharing, scalability, rapid provisioning, measured usage, and broad network access.
3. IaaS, PaaS & SaaS
IaaS provides infrastructure. PaaS provides a development and deployment platform. SaaS provides ready-to-use
software.
4. Public, Private & Hybrid
Public cloud uses provider infrastructure. Private cloud is dedicated to one organization. Hybrid combines public and
private environments.
5. Virtualization
Virtualization creates virtual versions of computing resources so multiple environments can share physical hardware.
6. Scalability & Elasticity
Scalability means increasing or decreasing capacity. Elasticity emphasizes adjusting resources as demand changes.
7. Cloud Storage
Cloud storage keeps data on remote infrastructure accessed through a network and can support backup,
synchronization, and collaboration.
8. Benefits
Flexible capacity, rapid deployment, remote access, reduced local infrastructure needs, and usage-based resource
allocation.
9. Challenges
Security and privacy concerns, outages, vendor dependence, compliance requirements, and network dependency.
10. Cloud Security
Identity and access management, encryption, secure configuration, monitoring, backups, least privilege, and updates
help improve security.
11. Containers
Containers package applications and dependencies into portable environments and are widely used for application
deployment.
12. Applications
Exam Power Notes — Quick Revision Guide
1. Cloud Computing
Cloud computing delivers computing resources such as servers, storage, databases, networking, and software over a
network.
2. Key Characteristics
On-demand access, resource sharing, scalability, rapid provisioning, measured usage, and broad network access.
3. IaaS, PaaS & SaaS
IaaS provides infrastructure. PaaS provides a development and deployment platform. SaaS provides ready-to-use
software.
4. Public, Private & Hybrid
Public cloud uses provider infrastructure. Private cloud is dedicated to one organization. Hybrid combines public and
private environments.
5. Virtualization
Virtualization creates virtual versions of computing resources so multiple environments can share physical hardware.
6. Scalability & Elasticity
Scalability means increasing or decreasing capacity. Elasticity emphasizes adjusting resources as demand changes.
7. Cloud Storage
Cloud storage keeps data on remote infrastructure accessed through a network and can support backup,
synchronization, and collaboration.
8. Benefits
Flexible capacity, rapid deployment, remote access, reduced local infrastructure needs, and usage-based resource
allocation.
9. Challenges
Security and privacy concerns, outages, vendor dependence, compliance requirements, and network dependency.
10. Cloud Security
Identity and access management, encryption, secure configuration, monitoring, backups, least privilege, and updates
help improve security.
11. Containers
Containers package applications and dependencies into portable environments and are widely used for application
deployment.
12. Applications
