Introduction to Cloud Computing(UNIT 1).pptx
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This document provides an introduction to cloud computing, including definitions, characteristics, service models, deployment models, and virtualization concepts. It defines cloud computing as storing and accessing data and programs on remote servers hosted on the internet. The main service models are infrastructure as a service (IaaS), platform as a service (PaaS), and software as a service (SaaS). The primary deployment models are public cloud, private cloud, hybrid cloud, community cloud, and multi-cloud. Virtualization allows for the sharing of physical resources and is key to cloud computing.
Introduction to Cloud Computing(UNIT 1).pptx
- 1. Introduction to Cloud Computing(UNIT 1) BY:SURBHI SAROHA
- 2. Syllabus Cloud Computing Properties & Characteristics Service models Deployment models Virtualization concepts
- 3. Cloud Computing Cloud computing means storing and accessing the data and programs on remote servers that are hosted on the internet instead of the computer’s hard drive or local server. Cloud computing is also referred to as Internet-based computing, it is a technology where the resource is provided as a service through the Internet to the user. The data which is stored can be files, images, documents, or any other storable document.
- 4. Some operations which can be performed with cloud computing are – Storage, backup, and recovery of data Delivery of software on demand Development of new applications and services Streaming videos and audio
- 5. Why Cloud Computing? Here are the top reasons why to switch to Cloud Computing instead of owning a database server. 1. Reduces cost : The cost-cutting ability of businesses that utilize cloud computing over time is one of the main advantages of this technology. On average 15% of the total cost can be saved by companies if they migrate to the cloud. By the use of cloud servers businesses will save and reduce costs with no need to employ a staff of technical support personnel to address server issues. There are many great business modules regarding the cost-cutting benefits of cloud servers such as the Coca-Cola and Pinterest case studies.
- 6. Cont….. 2. More storage : For software and applications to execute as quickly and efficiently as possible, it provides more servers, storage space, and computing power. Many tools are available for cloud storage such as Dropbox, Onedrive, Google Drive, iCloud Drive, etc. 3. Employees using cloud computing have better work-life balance : Direct connections between cloud computing benefits, and the work and personal lives of an enterprise’s workers can both improve because of cloud computing. Even on holidays, the employees have to work with the server for its security, maintenance, and proper functionality. But with cloud storage the thing is not the same, employees get ample of time for their personal life and the workload is even less comparatively.
- 8. There are many characteristics of Cloud Computing here are few of them : On-demand self-services: The Cloud computing services does not require any human administrators, user themselves are able to provision, monitor and manage computing resources as needed. Broad network access: The Computing services are generally provided over standard networks and heterogeneous devices. Rapid elasticity: The Computing services should have IT resources that are able to scale out and in quickly and on as needed basis. Whenever the user require services it is provided to him and it is scale out as soon as its requirement gets over. Resource pooling: The IT resource (e.g., networks, servers, storage, applications, and services) present are shared across multiple applications and occupant in an uncommitted manner. Multiple clients are provided service from a same physical resource. Measured service: The resource utilization is tracked for each application and occupant, it will provide both the user and the resource provider with an account of what has been used. This is done for various reasons like monitoring billing and effective use of resource. Multi-tenancy: Cloud computing providers can support multiple tenants (users or organizations) on a single set of shared resources.
- 9. Cont…. Virtualization: Cloud computing providers use virtualization technology to abstract underlying hardware resources and present them as logical resources to users. Resilient computing: Cloud computing services are typically designed with redundancy and fault tolerance in mind, which ensures high availability and reliability. Flexible pricing models: Cloud providers offer a variety of pricing models, including pay-per- use, subscription-based, and spot pricing, allowing users to choose the option that best suits their needs. Security: Cloud providers invest heavily in security measures to protect their users’ data and ensure the privacy of sensitive information. Automation: Cloud computing services are often highly automated, allowing users to deploy and manage resources with minimal manual intervention. Sustainability: Cloud providers are increasingly focused on sustainable practices, such as energy-efficient data centers and the use of renewable energy sources, to reduce their environmental impact.
- 10. Service models There are the following three types of cloud service models - Infrastructure as a Service (IaaS) Platform as a Service (PaaS) Software as a Service (SaaS)
- 11. 1. Infrastructure as a service (IaaS) Infrastructure as a Service (IaaS) helps in delivering computer infrastructure on an external basis for supporting operations. Generally, IaaS provides services to networking equipment, devices, databases, and web servers. Infrastructure as a Service (IaaS) helps large organizations, and large enterprises in managing and building their IT platforms. This infrastructure is flexible according to the needs of the client. Advantages of IaaS IaaS is cost-effective as it eliminates capital expenses. IaaS cloud provider provides better security than any other software. IaaS provides remote access. Disadvantages of IaaS In IaaS, users have to secure their own data and applications. Cloud computing is not accessible in some regions of the World.
- 12. 2. Platform as a service (PaaS) Platform as a Service (PaaS) is a type of cloud computing that helps developers to build applications and services over the Internet by providing them with a platform. PaaS helps in maintaining control over their business applications. Advantages of PaaS PaaS is simple and very much convenient for the user as it can be accessed via a web browser. PaaS has the capabilities to efficiently manage the lifecycle. Disadvantages of PaaS PaaS has limited control over infrastructure as they have less control over the environment and are not able to make some customizations. PaaS has a high dependence on the provider.
- 13. 3. Software as a service (SaaS) Software as a Service (SaaS) is a type of cloud computing model that is the work of delivering services and applications over the Internet. The SaaS applications are called Web-Based Software or Hosted Software. SaaS has around 60 percent of cloud solutions and due to this, it is mostly preferred by companies. Advantages of SaaS SaaS can access app data from anywhere on the Internet. SaaS provides easy access to features and services. Disadvantages of SaaS SaaS solutions have limited customization, which means they have some restrictions within the platform. SaaS has little control over the data of the user. SaaS are generally cloud-based, they require a stable internet connection for proper working.
- 14. Deployment models What is a Cloud Deployment Model? Cloud Deployment Model functions as a virtual computing environment with a deployment architecture that varies depending on the amount of data you want to store and who has access to the infrastructure. Different types of cloud computing deployment models are described below. Public Cloud Private Cloud Hybrid Cloud Community Cloud Multi-Cloud
- 15. Public Cloud The public cloud makes it possible for anybody to access systems and services. The public cloud may be less secure as it is open to everyone. The public cloud is one in which cloud infrastructure services are provided over the internet to the general people or major industry groups. The infrastructure in this cloud model is owned by the entity that delivers the cloud services, not by the consumer. It is a type of cloud hosting that allows customers and users to easily access systems and services. This form of cloud computing is an excellent example of cloud hosting, in which service providers supply services to a variety of customers. In this arrangement, storage backup and retrieval services are given for free, as a subscription, or on a per-user basis. For example, Google App Engine etc.
- 16. Public Cloud
- 17. Advantages of the Public Cloud Model Minimal Investment: Because it is a pay-per-use service, there is no substantial upfront fee, making it excellent for enterprises that require immediate access to resources. No setup cost: The entire infrastructure is fully subsidized by the cloud service providers, thus there is no need to set up any hardware. Infrastructure Management is not required: Using the public cloud does not necessitate infrastructure management. No maintenance: The maintenance work is done by the service provider (not users). Dynamic Scalability: To fulfill your company’s needs, on-demand resources are accessible.
- 18. Disadvantages of the Public Cloud Model Less secure: Public cloud is less secure as resources are public so there is no guarantee of high-level security. Low customization: It is accessed by many public so it can’t be customized according to personal requirements.
- 19. Private Cloud The private cloud deployment model is the exact opposite of the public cloud deployment model. It’s a one-on-one environment for a single user (customer). There is no need to share your hardware with anyone else. The distinction between private and public clouds is in how you handle all of the hardware. It is also called the “internal cloud” & it refers to the ability to access systems and services within a given border or organization. The cloud platform is implemented in a cloud-based secure environment that is protected by powerful firewalls and under the supervision of an organization’s IT department. The private cloud gives greater flexibility of control over cloud resources.
- 20. Private Cloud
- 21. Advantages of the Private Cloud Model Better Control: You are the sole owner of the property. You gain complete command over service integration, IT operations, policies, and user behavior. Data Security and Privacy: It’s suitable for storing corporate information to which only authorized staff have access. By segmenting resources within the same infrastructure, improved access and security can be achieved. Supports Legacy Systems: This approach is designed to work with legacy systems that are unable to access the public cloud. Customization: Unlike a public cloud deployment, a private cloud allows a company to tailor its solution to meet its specific needs.
- 22. Disadvantages of the Private Cloud Model Less scalable: Private clouds are scaled within a certain range as there is less number of clients. Costly: Private clouds are more costly as they provide personalized facilities.
- 23. Hybrid Cloud By bridging the public and private worlds with a layer of proprietary software, hybrid cloud computing gives the best of both worlds. With a hybrid solution, you may host the app in a safe environment while taking advantage of the public cloud’s cost savings. Organizations can move data and applications between different clouds using a combination of two or more cloud deployment methods, depending on their needs.
- 24. Hybrid Cloud
- 25. Advantages of the Hybrid Cloud Model Flexibility and control: Businesses with more flexibility can design personalized solutions that meet their particular needs. Cost: Because public clouds provide scalability, you’ll only be responsible for paying for the extra capacity if you require it. Security: Because data is properly separated, the chances of data theft by attackers are considerably reduced. Disadvantages of the Hybrid Cloud Model Difficult to manage: Hybrid clouds are difficult to manage as it is a combination of both public and private cloud. So, it is complex. Slow data transmission: Data transmission in the hybrid cloud takes place through the public cloud so latency occurs.
- 26. Community Cloud It allows systems and services to be accessible by a group of organizations. It is a distributed system that is created by integrating the services of different clouds to address the specific needs of a community, industry, or business. The infrastructure of the community could be shared between the organization which has shared concerns or tasks. It is generally managed by a third party or by the combination of one or more organizations in the community.
- 27. Community Cloud
- 28. Advantages of the Community Cloud Model Cost Effective: It is cost-effective because the cloud is shared by multiple organizations or communities. Security: Community cloud provides better security. Shared resources: It allows you to share resources, infrastructure, etc. with multiple organizations. Collaboration and data sharing: It is suitable for both collaboration and data sharing. Disadvantages of the Community Cloud Model Limited Scalability: Community cloud is relatively less scalable as many organizations share the same resources according to their collaborative interests. Rigid in customization: As the data and resources are shared among different organizations according to their mutual interests if an organization wants some changes according to their needs they cannot do so because it will have an impact on other organizations.
- 29. Multi-Cloud We’re talking about employing multiple cloud providers at the same time under this paradigm, as the name implies. It’s similar to the hybrid cloud deployment approach, which combines public and private cloud resources. Instead of merging private and public clouds, multi-cloud uses many public clouds. Although public cloud providers provide numerous tools to improve the reliability of their services, mishaps still occur. It’s quite rare that two distinct clouds would have an incident at the same moment. As a result, multi-cloud deployment improves the high availability of your services even more.
- 30. Multi-Cloud
- 31. Advantages of the Multi-Cloud Model You can mix and match the best features of each cloud provider’s services to suit the demands of your apps, workloads, and business by choosing different cloud providers. Reduced Latency: To reduce latency and improve user experience, you can choose cloud regions and zones that are close to your clients. High availability of service: It’s quite rare that two distinct clouds would have an incident at the same moment. So, the multi-cloud deployment improves the high availability of your services. Disadvantages of the Multi-Cloud Model Complex: The combination of many clouds makes the system complex and bottlenecks may occur. Security issue: Due to the complex structure, there may be loopholes to which a hacker can take advantage hence, makes the data insecure.
- 32. Virtualization concepts Virtualization is a technique how to separate a service from the underlying physical delivery of that service. It is the process of creating a virtual version of something like computer hardware. It was initially developed during the mainframe era. It involves using specialized software to create a virtual or software-created version of a computing resource rather than the actual version of the same resource. With the help of Virtualization, multiple operating systems and applications can run on the same machine and its same hardware at the same time, increasing the utilization and flexibility of hardware.
- 33. CONT…. In other words, one of the main cost-effective, hardware-reducing, and energy-saving techniques used by cloud providers is Virtualization. Virtualization allows sharing of a single physical instance of a resource or an application among multiple customers and organizations at one time. It does this by assigning a logical name to physical storage and providing a pointer to that physical resource on demand. The term virtualization is often synonymous with hardware virtualization, which plays a fundamental role in efficiently delivering Infrastructure-as-a- Service (IaaS) solutions for cloud computing. Moreover, virtualization technologies provide a virtual environment for not only executing applications but also for storage, memory, and networking.
- 34. Virtualization
- 35. Work of Virtualization in Cloud Computing Virtualization has a prominent impact on Cloud Computing. In the case of cloud computing, users store data in the cloud, but with the help of Virtualization, users have the extra benefit of sharing the infrastructure. Cloud Vendors take care of the required physical resources, but these cloud providers charge a huge amount for these services which impacts every user or organization. Virtualization helps Users or Organisations in maintaining those services which are required by a company through external (third-party) people, which helps in reducing costs to the company. This is the way through which Virtualization works in Cloud Computing.
- 36. Benefits of Virtualization More flexible and efficient allocation of resources. Enhance development productivity. It lowers the cost of IT infrastructure. Remote access and rapid scalability. High availability and disaster recovery. Pay peruse of the IT infrastructure on demand. Enables running multiple operating systems.
- 37. Drawback of Virtualization High Initial Investment: Clouds have a very high initial investment, but it is also true that it will help in reducing the cost of companies. Learning New Infrastructure: As the companies shifted from Servers to Cloud, it requires highly skilled staff who have skills to work with the cloud easily, and for this, you have to hire new staff or provide training to current staff. Risk of Data: Hosting data on third-party resources can lead to putting the data at risk, it has the chance of getting attacked by any hacker or cracker very easily.
- 38. THANK YOU