Presentation clod.pptx
- 2. Benefits of cloud computing • Cloud computing has become the buzzword and almost everyone have heard of it, but very few have understood the implications of cloud computing. Cloud computing simply means storing and accessing information via internet using any devices, that is, desktop, tablets and smartphones. Cloud computing is a really worthy solution for SMEs and even for some large businesses.
- 4. Flexible and Scalable • One of the major benefits of cloud computing for any business which has opted cloud computing can increase or decrease the bandwidth as per requirement. • For example, an E-Commerce website during the holidays will get a rise in traffic and accordingly they have to manage the bandwidth because during the off season there will be less traffic. With cloud computing they just have to contact their cloud service provider and get the bandwidth increased. This makes it easier for business to increase and decrease the bandwidth as and when required hence saving cost.
- 5. Reduce Infrastructure cost Moving to cloud reduces the cost of managing and maintaining servers. Cloud computing eliminates the need to invest in servers and the software. Cloud also reduces the overhead costs like IT Staff, power, data storage and bandwidth. They are payment models as well for cloud like one-time payment and pay-as-you-go, therefore business can choose according to their need.
- 6. No Location Constraints • Access to anything stored in the cloud at any point of time and from any geo-location via internet gives the user 24*7/365 availability. This enable employees or users to work from anywhere, anytime.
- 7. Security, Back-up and Disaster Recovery • Data security and redundancy is the backbone on which cloud computing is built on. Therefore the cloud service providers spend heavily on servers and data security. Most of the cloud service providers are capable of handling information recovery. And also since the data is stored in cloud, it is much easier to back-up and restore compared to physical devices.
- 8. Roles and boundaries of • Cloud Provider • The organization that provides cloud-based IT resources is the cloud provider. When assuming the role of cloud provider, an organization is responsible for making cloud services available to cloud consumers, as per agreed upon SLA guarantees. The cloud provider is further tasked with any required management and administrative duties to ensure the on-going operation of the overall cloud infrastructure. • Cloud providers normally own the IT resources that are made available for lease by cloud consumers; however, some cloud providers also “resell” IT resources leased from other cloud providers.
- 9. Cloud Consumer • A cloud consumer is an organization (or a human) that has a formal contract or arrangement with a cloud provider to use IT resources made available by the cloud provider. Specifically, the cloud consumer uses a cloud service consumer to access a cloud service (Figure 1). • The figures in this book do not always explicitly label symbols as “cloud consumers.” Instead, it is generally implied that organizations or humans shown remotely accessing cloud-based IT resources are considered cloud consumers.
- 11. • Cloud Service Owner • The person or organization that legally owns a cloud service is called a cloud service owner. The cloud service owner can be the cloud consumer, or the cloud provider that owns the cloud within which the cloud service resides. • For example, either the cloud consumer of Cloud X or the cloud provider of Cloud X could own Cloud Service A (Figures 1 and 2). • Note that a cloud consumer that owns a cloud service hosted by a third-party cloud does not necessarily need to be the user (or consumer) of the cloud service. Several cloud consumer organizations develop and deploy cloud services in clouds owned by other parties for the purpose of making the cloud services available to the general public. • The reason a cloud service owner is not called a cloud resource owner is because the cloud service owner role only applies to cloud services (which, as explained in Chapter 3, are externally accessible IT resources that reside in a cloud).
- 13. • Cloud Resource Administrator • A cloud resource administrator is the person or organization responsible for administering a cloud-based IT resource (including cloud services). The cloud resource administrator can be (or belong to) the cloud consumer or cloud provider of the cloud within which the cloud service resides. Alternatively, it can be (or belong to) a third-party organization contracted to administer the cloud-based IT resource.
- 15. Additional RolesThe NIST Cloud Computing Reference Architecture defines the following supplementary roles: • Cloud Auditor – A third-party (often accredited) that conducts independent assessments of cloud environments assumes the role of the cloud auditor. The typical responsibilities associated with this role include the evaluation of security controls, privacy impacts, and performance. The main purpose of the cloud auditor role is to provide an unbiased assessment (and possible endorsement) of a cloud environment to help strengthen the trust relationship between cloud consumers and cloud providers. • Cloud Broker – This role is assumed by a party that assumes the responsibility of managing and negotiating the usage of cloud services between cloud consumers and cloud providers. Mediation services provided by cloud brokers include service intermediation, aggregation, and arbitrage. • Cloud Carrier – The party responsible for providing the wire-level connectivity between cloud consumers and cloud providers assumes the role of the cloud carrier. This role is often assumed by network and telecommunication providers.
- 16. • Organizational Boundary An organizational boundary represents the physical perimeter that surrounds a set of IT resources that are owned and governed by an organization. The organizational boundary does not represent the boundary of an actual organization, only an organizational set of IT assets and IT resources. Similarly, clouds have an organizational boundary.
- 17. • Trust Boundary • When an organization assumes the role of cloud consumer to access cloud- based IT resources, it needs to extend its trust beyond the physical boundary of the organization to include parts of the cloud environment. • A trust boundary is a logical perimeter that typically spans beyond physical boundaries to represent the extent to which IT resources are trusted .When analyzing cloud environments, the trust boundary is most frequently associated with the trust issued by the organization acting as the cloud consumer.
- 18. Cloud and SOA Introduction • Enterprise wide transformation poses significant challenges for process, people and technology • Early identification of challenges and defining a mitigated approach achieves a smooth transformation • challenges include resistance to change by people and organization