Cloud computing

SaaS, PaaS and IaaS

It is an internet based computing relies on sharing computing resources. The “Cloud” in cloud computing can be defined as the set of hardware, networks, storage, services, and interfaces that combine to deliver aspects of computing as a service. Cloud services include the delivery of software, infrastructure, and storage over the internet based on-demand. Cloud Computing enables the availability of infinite infrastructure and resource capacity.

The most significant advantage of cloud computing to an organization is :
  • It avoids capital expenditure on hardware, software, and services
  • Low management overhead and immediate access to a broad range of applications
  • Pay for use and as needed, elastic & Scale up and down in capacity and functionalities
  • Eliminate upfront infrastructure costs
  • Quickly and easily deploy the applications to a highly scalable cloud environment
  • Allows you to start small and scale as traffic grows
  • Services are often covered by service level agreements (SLAs)
  • Users can terminate the contract at any time (thereby avoiding return on investment risk and uncertainty)

Three Cloud Computing Service Models

SaaS, PaaS and IaaS are considered the three pillars of the cloud computing service model. Cloud Concept incorporates combinations of the following :

  • Infrastructure as a Service (IaaS) is at the foundational level and includes capabilities such as operating systems, networks, virtual machines, and storage.
  • Renting of computer hardware (servers, networking technology, storage, and data center space) instead of buying and installing it in your own data center.
  • Operating systems and virtualization technology to manage these resources.
  • Infrastructure as a Service (IaaS) is the delivery of equipment -- servers, virtual machines (VMs), networking components -- over a network.
  • Integrated cloud-based computing environment that supports the development, running, and management of applications.
  • A primary value of a PaaS environment is that developers don’t have to be concerned with some of the lower-level details of the environment.
  • It includes services for developing and deploying applications.
  • Developer can easily create custom applications using programming tools and deploy them onto the cloud infrastructure.
  • Deploy Customer Created applications.
  • Software distribution model in which applications are hosted by a service provider and made available to customers over a network, typically the Internet.
  • The service provider gives customers network-based access to a single copy of an application created specifically for SaaS distribution.
  • Benefits of the SaaS model include:
  • Software Compatibility: All users will have the same version of software
  • Automatic updates and patch management
  • software features can be easily enabled or disabled by customer and Global accessibility

iLEAF has an in-depth understanding of the underlying cloud computing technologies. It facilitates the customers to migrate their existing applications to cloud with ease and reduce complexity. We have dedicated team for the leading cloud platforms – Amazon Web Services and Windows Azure.

iLEAF can help customers :
  • Move infrastructure spending CAPEX (Capital expenditures) to OPEX (Operational expenditure).
  • Significantly reduce maintenance and monitor ongoing expenses.
  • Improve time to market by reducing time to deploy applications and reducing time to scale up infrastructure.
  • Automatic updates and patch management
  • Change business model from one-time-license fee to ongoing revenue stream in a tiered model.

iLEAF Advantage :
  • Extensive Experience in Cloud Computing Application Development, Customization, Integration, Deployment & Support.
  • Cloud Computing expert resource pool.
  • Flexible Engagement : Fixed Price, Time & Material (T&M).
  • Quick and Consistent Deployment.
  • Cost Savings of up to 60%.


(as a service)

(as a service)

(as a service)

  Managed by Customer
  Managed by Service provider

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