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define cloud computing
the use of computing resources (e.g. storage/access of files) over the internet instead of physically
what is a server (on the cloud)
servers hold the files and folders of the users of an organisation
what are user devices
user who are identifies and given access rights to those resources they are permitted,
members of the cloud
what is cloud storage
the storing of data on servers located on and access via the internet.
what does cloud storage enable businesses and consumers to do (2)
save data securely online so it can be accessed anytime from any location and easily shared with those granted permission
cloud storage can also back up data so that…
it is in a different physical location
What is a public cloud?
cloud services provided by another company where everything is owned and managed by the cloud provider.
e.g. google cloudw
what is a private cloud
cloud services managed and provided in-house
cloud infrastructure operating exclusively for one company (either managed by the company itself or a third party, or both), it’s hosted primarily on premises.
benefits of a private cloud
greater control over resources, data security and regulatory compliance
avoids issues with sharing systems
what is multi-cloud
infrastructure from multiple public clouds
using services from two or more major service providers: e.g. iCloud, google
what is hybrid cloud + an advantage
mixture of public and private clouds
flexible: can un critical applications on a private cloud while using the public cloud for less sensitive tasks.
Improved Security: Sensitive data can remain on private clouds, while public clouds handle non-sensitive operations.
benefits (4) vs drawbacks (4) of cloud computing
BENEFITS:
cost efficient: only purchase capacity required. the provider manages housing/infrastructure
faster to set up: deploy servers in minutes instead of weeks
reliable: providers can build geographical redundancy - data backup and disaster recovery are much easier and less expensive for a business, can reach data all over the world
better security built in: better security offered by providers
DRAWBACKS
downtime: if internet goes down, all resources/data access goes with it
switching to cloud/to different clouds may take ages + be expensive
data breaches/hackers: though usual due to human error
lack of control
complexity
environmental impacts of cloud computing
significant energy consumption
high CO2 footprint
high water consumption
growing demand
what is cloud vendor lock in
when transitioning data, products, or services to another vendor's platform is difficult and costly, making customers more dependent (locked-in) on a single cloud storage solution.
public vs private vs hybrid, pros and cons
Public Cloud
Pros:
Cost-effective (pay-as-you-go).
Scalable and fast to deploy.
Maintenance handled by provider.
Cons:
Limited control and customization.
Potential privacy and security concerns.
Costs can grow over time.
Private Cloud
Pros:
Full control and enhanced security.
Customizable to business needs.
Cons:
Expensive to set up and maintain.
Limited scalability compared to public cloud.
Hybrid cloud
Pros:
Flexibility: Combines public cloud scalability with private cloud security.
Cost Optimization: Use public cloud for less sensitive tasks, private for critical ones.
Business Continuity: Enhanced disaster recovery and workload mobility.
Cons:
Complex Management: Integrating public and private clouds can be challenging.
Higher Costs: Managing both environments may require extra resources.
Security Risks: Data transfer between clouds can be vulnerable if not secured.