Cloud History

Question 1

1950s: The Beginnings

Answer 1

Notes - 1950s - Mainframe Era
Mainframes with high processing power introduced.
Concept of Time-Sharing/Resource Pooling: Multiple users accessing a single mainframe.

Question 2

1970s: The Rise of Virtualization

Answer 2

Notes - 1970s - Virtualization Emerges
Introduction of Virtual Machine (VM) Operating Systems.
Mainframes could host multiple VMs, simulating separate computing environments on the same hardware.

Question 3

Late 20th Century: Hardware and Internet Developments

Answer 3

Notes - Late 20th Century - Server Virtualization
Shift towards virtualized servers due to high hardware costs and internet growth.
Development of shared hosting, virtual private servers, and virtual dedicated servers.

Question 4

Hypervisors and Shared Resources

Answer 4

Notes - Hypervisors - Resource Management
Introduction of hypervisors: software allowing multiple OS to run on a single physical server.
Hypervisors manage resource allocation, maintaining isolation and security among VMs.

Question 5

The Birth of Modern Cloud Computing

Answer 5

Notes - Modern Cloud Computing
Emergence of Pay-as-You-Go/Utility Computing Model: Users pay only for the resources they use.
Transition from Capital Expenditure (CapEx) to Operational Expense (OpEx) model.
Enhanced scalability and flexibility, allowing resource scaling based on demand.

Question 6

Cloud Services Providers

Answer 6

IBM Cloud, Google Cloud, Microsoft Azure, AWS (Amazon Web Services), Oracle Cloud, Salesforce, Alibaba Cloud, SAP