Select three advantages of cloud computing quizlet

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1. Science
2. Computer Science

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Terms in this set [9]

Cloud Computing

○ The storage/use of information or application in the cloud [data/app in the internet]
○ the data and app live on a "cloud" of web servers
○ On demand access to computing resources [networks, servers, storage, apps, services]
§ Ex. google docs

Types of cloud computing

○ Types
§ Public
§ Private
§ Hybrid

Software Stacks/Layers

1. Software as a service [SAAS]
2. Platform as a service [PAAS]
3. Infrastructure as a service [IAAS]

SAAS

1. Software as a service [SAAS]
1] Apps that are already available in the cloud
a] Ex. Google docs
2] Created for end-users
3] Web access to commercial software

PAAS

2. Platform as a service [PAAS]
1] Provides tools to create/customize apps for developers to create custom apps
a] "Application Programming Interface" - APIs
2] Offers components to build something using programming languages and tools supported by the provider
i] Ex. Google app engine

IAAS

3. Infrastructure as a service [IAAS]
1] "On demand" resource: computing power and space
2] Rapid elasticity [expanded or reduced]
a] Ex. amazon web services
3] Provides hardware, storage, servers and network components; it may also include software
4] Only for when it is needed

Software Arrangement Customizability

○ Software Arrangements Customizability
§ Packaged Software
□ Applications
□ Data
□ Runtime
□ Middleware
□ O/S
□ Virtualization
□ Servers
□ Storage
□ Networking
§ IAAS
□ Applications
□ Data
□ Runtime
□ Middleware
□ O/S
§ PAAS
□ Applications
□ Data
§ SAAS
□ None

Advantages of Cloud Computing

○ Advantages
§ Facilitate collaborative working
§ Less need for local data storage
§ No need to download apps / license new software
§ Accessible from any computer
§ No startup cost / capital investment
§ Increase capacity / capabilities as needed
□ Scalability
□ Elasticity - increasing or decreasing provided resources
§ No training new personnel

Disadvantages of Cloud Computing

○ Disadvantages
§ No guarantee of backup / loss of data
§ Security issues
§ Privacy issues
§ Power and internet dependent

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