Cloud computing by NADEEM AHMED
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Cloud computing provides utility computing resources and applications over the Internet. It has various deployment and service models including public, private, hybrid, infrastructure as a service (IaaS), platform as a service (PaaS), and software as a service (SaaS). Cloud computing offers advantages like lower costs, improved performance, unlimited storage, and device independence but also disadvantages such as requiring an Internet connection and potential security issues.
Cloud computing by NADEEM AHMED
- 1. CLOUD COMPUTING PRESENTED BY: NADEEM AHMED
- 2. Contents • Introduction • Definition • Description • Working Models • Working of Cloud Computing • Cloud Architecture • Advantages • Disadvantages • Cloud storage • Download for Storage
- 3. Introduction • The word cloud computing is comprise of two words : cloud and computing • The word cloud means anytime, anywhere or network • The word computing means to compute something such as processor, memory and storage
- 4. Definition • Cloud computing provides us means by which we can utilize applications as utility over the internet • Helps us to create, configure, modify, define or contrive and customize the applications online. e.g. Web conferencing, E-mail, Customer Relationship Management (CRM)
- 5. Description • Cloud computing is present within the accessible location such as: 1) Public Cloud (LAN, MAN, WAN) they are also known as shareable storage 2) Private Cloud (VPN) they are also known as dedicated storage
- 6. Description • Cloud computing provides us information about IT • Nowadays cloud computing is rapidly expanding in the field of IT • Cloud computing based on the modern principles of IT as compared to the traditional concepts of Grid Computing, Distributive Computing etc
- 7. Working Models • There are two types of models that have been discussed so far in cloud computing : 1. Deployment Models 2. Services Models
- 8. Deployment Models • Deployment models define the type of access to the cloud, i.e. , how the cloud is located? Cloud can have any of the four types of access:
- 10. Deployment Models • Public Cloud: It allows systems and services to be easily accessible to the general public. Public cloud may be less secure because of its openness, e.g. , e-mail. • Private Cloud: It allows systems and services to be accessible within an organization. It offers increased security because of its private nature.
- 11. Deployment Models • Community Cloud: It allows systems and services to be accessible by group of organizations • Hybrid Cloud: It is mixture of public and private cloud. However, the critical activities are performed using private cloud while the non- critical activities are performed using public cloud
- 12. Services Models • Services Models are the reference models on which the Cloud Computing is based. These can be categorized into four basic service models as listed below:
- 13. Services Models 1. Application as a Service (AaaS) 2. Infrastructure as a Service (IaaS) 3. Platform as a Service (PaaS) 4. Software as a Service (SaaS)
- 14. Application as a Service • These are the first kind of cloud computing • Under this a service is made available to end- user • End-user made an account with the service provider • The first famous application was web-based email services by hotmail in 1996
- 15. Infrastructure as a Service • Cloud computing vendors offer infrastructure as a service • One may avail hardware services such as processors, memory, networks • It may be provided on rent or free for some time span
- 16. Platform as a Service • Cloud computing vendors also provide platform as a service • In this an operating system is provided to the user • It may be provided on rent or free for some time span • Some cloud computing vendors are Amazon, Microsoft, Google etc
- 17. Software as a Service • Here a customer upon registration is allowed to use software accessible through internet • The data stored on service providers • It may be provided on rental basis or free for some time span, after this you have to purchase it for use • Expenses based on time of use
- 18. Working of Cloud Computing • Cloud Computing consist of two ends: I. Front End (user, client, computer) II. Back End (cloud) • Connection between the front end and the back end is the internet
- 19. Working of Cloud Computing • For understanding of working of cloud computing suppose that: • You use Browser to connect to the Google Docs, so that you can create documents in cloud • Browser (front end) and Google Docs (back end), the connection between them is the internet
- 20. Working of Cloud Computing • Front end is visible to the user • Back end works like a black box and not visible to the user • The upper described steps are not the case all the times • A custom application could be used to make connection with the cloud
- 21. Working of Cloud Computing
- 22. Cloud Architecture What is happening inside the cloud? • Data center is present within the cloud • It consists of many computers such as servers • Some of the servers are dedicated to server requests • Data server holds the data • Almost any program could be make to work in a cloud model
- 23. Cloud Architecture • e.g. e-mail, spreadsheet, games, presentations etc • The processors are used to monitor the traffic and load to verify that everything work smoothly • Servers are connected with each other and form internal networks • Cloud provider will take care of maintainance
- 24. Advantages • Lower computer costs • Improved performance • Reduced software costs • Instant software updates • Improved document format compatibility • Unlimited storage capacity • Latest version availability • Device independence
- 25. Disadvantages • Requires a constant internet connection • Does not work well with low-speed connections • Features might be limited • Can be slow • Stored data can be lost • Stored data might not be secure
- 26. Cloud Storage • Create an account, username and password • Content lives with the account in the cloud • Log onto any computer with Wi-Fi to find your content
- 27. Download for Storage • Download a cloud based app to on your computer • App lives on your computer • Save files to the application • When connected with the internet it will synchronize with the cloud • The cloud can be accessed from any internet connection