Chapter 6 Flashcards
cloud
the elastic leasing of pooled computer resources over the internet
elastic
the computing resources leased can be increased or decreased dynamically, programmatically, in a short span of time that organizations pay for
3 fundamental cloud types
- software as a service (SaaS)
- platform as a service (PaaS)
- infrastructure as a service (IaaS)
SaaS examples
Salesforce.com
Goolge Drive
Microsoft OneDrive
apple iCloud
software as a service (SaaS)
an organization that provides hardware infrastructure, an operating system, and application programs
PaaS examples
Microsoft Azure
Oracle on Demand
platform as a service (PaaS)
vendors provide hosted computers, an operating system, and possibly a DBMS
IaaS examples
Amazon EC2(Elastic Cloud 2) Amazon S3 (Simple Storage Service)
infrastructure as a service (IaaS)
the cloud hosting of a bare server computer or data storage
content delivery network (CDN)
an information system that stores user data in many different geographical locations and makes the data available on demand
benefits of a CDN
decreased load time
reduced load on origin server
increased reliability
reduced delivery costs for mobile users
virtual private network (VPN)
uses the internet to create the appearance of private, secure connections
tunnel
a virtual, private pathway over a public or shared network from the VPN client to the VPN server
private cloud
a cloud that is owned and operated by an organization for its own benefit
virtual private cloud
a subset of public cloud that has a highly restricted, secure access
