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What Cloud Computing Technologies? Cloud Computing

What Cloud Computing Technologies ? Cloud Computing

What Cloud Computing Technologies?

There’re certain technologies that are working behind the cloud computing platforms making cloud
computing flexible, reliable, usable. These technologies are listed below:

  1. Virtualization of Cloud Computing
  2. Service-Oriented Architecture (SOA) of Cloud Computing
  3. Grid Computing of Cloud Computing
  4. Utility Computing of Cloud Computing

    Virtualization of Cloud Computing

    Virtualization is a technique, which allows to share single physical instance of an application or resource among multiple organizations or tenants (customers). It does so by assigning a logical name to a physical resource and providing a pointer to that physical resource when demanded.

    The Multitenant architecture offers virtual isolation among the multiple tenants and therefore the organizations can use and customize the application as though they each have its own instance running.

    What Cloud Computing Technologies?
    Virtualization Cloud Model

    Service-Oriented Architecture(SOA) OF CLOUD COMPUTING

    What Cloud Computing Technologies?

    Service-Oriented Architecture helps to use applications as a service for other applications regardless the type of vendor, product or technology. Therefore, it is possible to exchange of data between applications of different vendors without additional programming or making changes to services.

    Cloud Computing Service Oriented Architecture

    Cloud Computing Service Oriented Architecture

    What Cloud Computing Technologies?

    Grid Computing

    Grid Computing refers to distributed computing in which a group of computers from multiple locations are connected with each other to achieve common objective. These computer resources are heterogeneous and geographically dispersed.
    Grid Computing breaks complex task into smaller pieces. These smaller pieces are distributed to CPUs that reside within the grid.

    Grid Cloud Computing Technologies

    Utility Computing

    What Cloud Computing Technologies?

    Utility computing is based on Pay per Use model. It offers computational resources on demand as a metered service. Cloud computing, grid computing, and managed IT services are based on the concept of Utility computing.

    Cloud Computing Infrastructure

    Cloud Infrastructure Components Complete explanation

    Cloud infrastructure consists of servers, storage, network, management software, and deployment
    software and platform virtualization.

    Cloud Infrastructure Components

    HYPERVISOR OF CLOUD COMPUTING

    What Cloud Computing Technologies?

    Hypervisor is a firmware or low-level program that acts as a Virtual Machine Manager. It allows to share the single physical instance of cloud resources between several tenants.

    MANAGEMENT SOFTWARE OF CLOUD COMPUTING

    Management Software helps to maintain and configure the infrastructure

    DEPLOYMENT SOFTWARE OF CLOUD COMPUTING

    Deployment software helps to deploy and integrate the application on the cloud

    NETWORK IN CLOUD COMPUTING

    Network is the key component of cloud infrastructure. It allows to connect cloud services over the Internet. It is also possible to deliver network as a utility over the Internet, i.e., the consumer can customize the network route and protocol. What Cloud Computing Technologies?

    SERVER OF CLOUD COMPUTING

    Server helps to compute the resource sharing and offer other services such as resource allocation and
    deallocation, monitoring resources, security, etc.

    STORAGE IN CLOUD COMPUTING

    Cloud uses distributed file system for storage purpose. If one of the storage resource fails, then it can be extracted from another one which makes cloud computing more reliable.

    Infrastructural Constraints in Cloud Computing | What Cloud Computing Technologies?

    Fundamental constraints that cloud infrastructure should implement are shown in the following diagram:

    Fundamental constraints that cloud infrastructure should implement are shown in the following diagram

    TRANSPARENCY OF CLOUD COMPUTING

    Since virtualization is the key to share resources in cloud environment. But it is not possible to satisfy the demand with single resource or server. Therefore, there must be transparency in resources, load balancing and application, so that we can scale them on demand.

    SCALABILITY IN CLOUD COMPUTING | What Cloud Computing Technologies?

    Scaling up an application delivery solution is not that easy as scaling up an application because it involves configuration overhead or even re-architecting the network. So, application delivery solution is need to be scalable which will require the virtual infrastructure such that resource can be provisioned and de-provisioned easily. What Cloud Computing Technologies?

    INTELLIGENT MONITORING IN CLOUD COMPUTING

    To achieve transparency and scalability, application solution delivery will need to be capable of intelligent
    monitoring.

    SECURITY OF CLOUD COMPUTING

    The mega data center in the cloud should be securely architected. Also the control node, a entry point in mega data center also needs to be secure.

    Cloud Computing-Architecture

    The Cloud Computing architecture comprises of many cloud components, each of them are loosely
    coupled. We can broadly divide the cloud architecture into two parts:

    1. Front End Cloud Computing Architecture
    2. Back End Cloud Computing Architecture

    Each of the ends are connected through a network, usually via Internet. The following diagram shows the graphical view of cloud computing architecture: What Cloud Computing Technologies?

    Cloud Computing Architecture

    FRONT END Cloud Computing Architecture

    Front End refers to the client part of cloud computing system. It consists of interfaces and applications that are required to access the cloud computing platforms, e.g., Web Browser.

    BACK END Cloud Computing Architecture

    Back End refers to the cloud itself. It consists of all the resources required to provide cloud computing services. It comprises of huge data storage, virtual machines, security mechanism, services, deployment models, servers, etc. What Cloud Computing Technologies?

    Important Points of Cloud Computing Architecture

    1. It is the responsibility of the back end to provide built-in security mechanism, traffic control and protocols.
    2. The server employs certain protocols, known as middleware, helps the connected devices to communicate with each other.

    Public Cloud Model

    Complete explanation of Public Cloud

    The Public Cloud allows systems and services to be easily accessible to general public, e.g., Google,
    Amazon, Microsoft offers cloud services via Internet. What Cloud Computing Technologies?

    Public Cloud Model Structure

    Benefits of Public Cloud Model

    There are many benefits of deploying cloud as public cloud model. The following diagram shows some of those benefits:

    COST EFFECTIVE OF PUBLIC CLOUD COMPUTING

    Since public cloud share same resources with large number of consumer, it has low cost.

    RELIABILITY OF PUBLIC CLOUD MODEL

    Since public cloud employs large number of resources from different locations, if any of the resource fail, public cloud can employ another one.

    FLEXIBILITY OF PUBLIC CLOUD MODEL

    It is also very easy to integrate public cloud with private cloud, hence gives consumers a flexible approach. What Cloud Computing Technologies?

    LOCATION INDEPENDENCE OF PUBLIC CLOUD MODEL

    Since, public cloud services are delivered through Internet, therefore ensures location independence.

    UTILITY STYLE COSTING IN PUBLIC CLOUD MODEL

    Public cloud is also based on pay-per-use model and resources are accessible whenever consumer needs it.

    HIGH SCALABILITY IN PUBLIC CLOUD MODEL

    Cloud resources are made available on demand from a pool of resources, i.e., they can be scaled up or down according the requirement.

    Disadvantages of Public Cloud Model

    Here are the disadvantages of public cloud model:

    LOW SECURITY in Public Cloud Model

    In public cloud model, data is hosted off-site and resources are shared publicly, therefore does not ensure higher level of security. What Cloud Computing Technologies?

    LESS CUSTOMIZABLE in Public Cloud Model

    It is comparatively less customizable than private cloud.

    Private Cloud Model

    Full Explanation of Private Cloud

    The Private Cloud allows systems and services to be accessible with in an organization. The Private Cloud is operated only within a single organization. However, It may be managed internally or by third-party. What Cloud Computing Technologies?

    Private Cloud Structure

    Benefits of Private Cloud

    There are many benefits of deploying cloud as private cloud model. The following diagram shows some of those benefits: What Cloud Computing Technologies?

    HIGHER SECURITY AND PRIVACY OF PRIVATE CLOUD

    Private cloud operations are not available to general public and resources are shared from distinct pool of
    resources, therefore, ensures high security and privacy.

    MORE CONTROLS IN PRIVATE CLOUD

    Private clouds have more control on its resources and hardware than public cloud because it is accessed only within an organization.

    COST AND ENERGY EFFICIENCY OF PRIVATE CLOUD

    Private cloud resources are not as cost effective as public clouds but they offer more efficiency than public cloud. What Cloud Computing Technologies?

    Disadvantages of Private Cloud

    Here are the disadvantages of using private cloud model:

    RESTRICTED AREA

    Private cloud is only accessible locally and is very difficult to deploy globally.

    INFLEXIBLE PRICING

    In order to fulfill demand, purchasing new hardware is very costly

    LIMITED SCALABILITY

    Private cloud can be scaled only within capacity of internal hosted resources.

    ADDITIONAL SKILLS OF PRIVATE CLOUD

    In order to maintain cloud deployment, organization requires more skilled and expertise.

    Hybrid Cloud Model

    Definition of Hybrid Cloud

    The Hybrid Cloud is a mixture of public and private cloud. Non-critical activities are performed using public cloud while the critical activities are performed using private cloud.

    Hybrid Cloud

    Benefits Hybrid Cloud

    There are many benefits of deploying cloud as hybrid cloud model. The following diagram shows some of those benefits: What Cloud Computing Technologies?

    SCALABILITY OF HYBRID CLOUD

    It offers both features of public cloud scalability and private cloud scalability.

    FLEXIBILITYOF HYBRID CLOUD

    It offers both secure resources and scalable public resources.

    COST EFFICIENCIES OF HYBRID CLOUD

    Public cloud are more cost effective than private, therefore hybrid cloud can have this saving.

    SECURITY OF HYBRID CLOUD

    Private cloud in hybrid cloud ensures higher degree of security.

    Disadvantages of Hybrid Cloud :

    NETWORKING ISSUES

    Networking becomes complex due to presence of private and public cloud.

    SECURITY COMPLIANCE

    It is necessary to ensure that cloud services are compliant with organization’s security policies.

    INFRASTRUCTURAL DEPENDENCY

    The hybrid cloud model is dependent on internal IT infrastructure, therefore it is necessary to ensure redundancy across data centers.

    Community Cloud Model

    Complete understanding of Community Cloud Model

    The Community Cloud allows system and services to be accessible by group of organizations. It shares
    the infrastructure between several organizations from a specific community. It may be managed internally or by the third-party.

    Benefits of Community Cloud Computing Model

    There are many benefits of deploying cloud as community cloud model. The following diagram shows some of those benefits:

    COST EFFECTIVE OF Community Cloud Model

    1. Community cloud offers same advantage as that of private cloud at low cost.
    2. Sharing Between Organizations
    3. Community cloud provides an infrastructure to share cloud resources and capabilities among several organizations.

    SECURITY IN Community Cloud Model

    Community cloud is comparatively more secure than the public cloud.

    ISSUES IN Community Cloud Model

    1. Since all data is housed at one location, one must be careful in storing data in community cloud because it might be accessible by others.
    2. It is also challenging to allocate responsibilities of governance, security and cost.

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