Cloud Computing Explained:

Question 1

Cloud

Answer 1

is server as a service ( serve virtualized = give access to something, perform similar as physical device )

• do demand,
• pay as you go pricing,
• get the right computing resource you need,
• access it instantly,
• right type and size of computing resource

Question 2

type deployment models of cloud

Answer 2

private cloud: for single organization and not for the public,

Question 3

Public cloud

Answer 3

resources owned by Auzer, google cloud, AWS.

Question 4

hybrid cloud

Answer 4

keep some server on prem (hold sensitive in the private infrastructure)and some on the cloud ( more flexibility, cost effectiveness of the public cloud )

Question 5

Five characters of the cloud

Answer 5

• On demand self service
• Borod network access
• Multi-tenancy and resource pooling
• Rapid elasticity and scalability
• Measured service

Question 6

Advantage of the cloud

Answer 6

• trade capital expense (capex ) for operational expense (OPEX)
  > not own hardware and pay on demand
  > reduced total cost of ownership(TCO) & operation expense (OPEX)
• Benefit from massive economies of scale
• Stop guessing capacity
• Increase speed agility
• Stop spending money running and maintaining data centers
• Go global in minutes: AWS global infrastructure

Question 7

Problem solve by cloud

Answer 7

• Flexibly
• Cost effectiveness
• Scalability
• Elasticity
• Agility
• High availability and fault-tolerance

Question 8

Type of cloud computing

Answer 8

• On-premises: manage- application, data, runtime, middleware, virtualization, servers, storage, and networking

Question 9

Infrastructure as a service (IaaS)

Answer 9

( we manage: application, data, runtime, middleware, o/s) but (AWS manage : virtualization, servers, storage, and networking )
→ As service = Amazon EC2, GCP Azure, rackspace, digital ocean, linode

Question 10

Platform as a service (PaaS)

Answer 10

( AWS manage: runtime, o/s, middleware, virtualization, servers, storage, and networking ) we care about managing: Application, and Data )
→ As service = Elastic Beanstalk on AWS, Heroku, google app engine(GCP), window Azure (microsoft)

Question 11

Software as a Service (SaaS) :

Answer 11

(AWS manage: application, data, runtime, middleware, virtualization, servers, storage, and networking )
→ AWS services like (rekognition machine learning), google app gmail and dropbox and zoom.

Question 12

Pricing of the cloud:

Answer 12

→ compute : pay for compute time

→ storage: pay for storage in the come

→ data transferring out of cloud: pay for date going out and not date coming in