Higher Computing Science Cloud and Internet Services

2. Cloud-based Services
The cloud is a network of servers, and each server has a different function.
Cloud services include:
Cloud storage (Dropbox, OneDrive, Google Drive)
Webmail (Gmail, Hotmail, Yahoo Mail)
Social Networking (Facebook, Twitter, Instagram)
Media Services (YouTube, iTunes, Spotify)
Web Applications (Google Docs, Office 365, Zoho)

3. Cloud Storage
Data is stored online in and accessible from multiple distributed and
connected resources that comprise a cloud.

4. Cloud Storage
Advantages
Accessible anywhere with Internet connection
Strong data backup (plus recovery processes)
Lower storage cost per Gigabyte - no need for server purchase
No need to email files – just send link
Large storage capacity
Disadvantages
Security and privacy – have to trust cloud storage provider
Speed of access – reliant on Internet connection
No internet = no access to files

5. Public Cloud
Applications and storage available to the general public over the Internet
Free or pay-per-usage (sometimes Freemium)
Advantages
Good for collaboration
Scalability (can increase amount of resource required easily)
Inexpensive
Disadvantages
Security and privacy

6. Public Cloud (Dropbox)

7. Public Cloud (Dropbox)

8. Private Cloud
Similar to public cloud BUT private cloud systems are owned and used by a
single organisation (although potentially managed externally)
Advantages:
High level of security and privacy
Customisable to needs of organisation
Scalability
Disadvantages
Cost

9. Private Cloud (Rackspace)

10. Hybrid Cloud
A combination of both public and private cloud solutions
Organisation uses cheaper public cloud where security is not an issue
Organisation uses more expensive private cloud when storing sensitive
data such as customer data
Advantages:
Secure when security is required
Cheaper than private cloud solution

11. Web Hosting
Web hosting is the service providing space on the Internet for websites.
Web sites are hosted on web servers.
ISPs commonly offer a small amount of space for personal web page/site.
Web hosting companies charge users/businesses for additional space and
the ability to run scripts / databases.
To have a web site a business must pay for hosted web space and also a
domain name.

12. Web Hosting
Free web hosting
Small amount of space provided by ISP or website such as Weebly,
Wordpress or MoonFruit
Not recommended for high traffic
Need to use their domain e.g. wordrpess.com/mysuperwebsite/

13. Web Hosting (Weebly)

14. Web Hosting
Shared web hosting
Own domain name
Hosted on a web server shared with other web sites
Reasonable cost (A few pounds per month)
Scalable (increase space / traffic as required)
Access to other tools (PHP, MySQL, CMS)
Restrictions on traffic, CPU, RAM

15. Web Hosting (Fast Hosts)

16. Web Hosting
Dedicated web hosting
Dedicated server
Entirely configurable
Greater reliability (uptime)
Required if high traffic

17. Web Hosting (WebFusion)