Guest Post by
Shailesh Shivakumar, Technology Architect, MFG-ADT Online,
computing is a buzz word for quite some time now. It was envisioned to provide
paradigm shift to computing industry. On the same lines there is also a
perception that cloud adoption is below the expectation. Is cloud really over
hyped IT wave? Come; let's take a walk in the clouds to find out more.
A brief history of cloud computing..
computing is defined by NIST as "Cloud computing is a model for enabling
convenient, on demand network access to a shared pool of configurable computing
resources that can be rapidly provisioned and released with minimal management
effort or service provider interaction". Computation has evolved over generations
starting from traditional IT to virtualization to standardization to automation
to self-service cloud.
Deployment models: A private cloud consists of a cloud infrastructure exclusively for a single cloud consumer whereas a public cloud is provisioned for open use by general public. Hybrid cloud is a combination of two or more distinct cloud infrastructures.
The cloud pyramid depicts various service models offered:
Essential Characteristics: Cloud infrastructure should support on-demand self-service with which the consumer can provision in the pre-defined process. Cloud should be ubiquitous network access which can be accessed from any device anywhere. The usage should be metered/measured to support only pay-per-use model and it should be elastic to support seamless scalability in real-time.
Cloud computing promises multi-dimensional benefits at various levels:
Trends, Prediction and adoption:
I am detailing few key survey statistics and its larger implications for the industry as a whole:
Cloud adoption and market is growing..
- Gartner predicts that cloud market would be 150B by 2013 while Merrill Lynch puts the number to 160B by 2011. IDC estimates that sales of public cloud will grow at 25% annual rate.
- Aberdeen group survey details that 48% of mid-sized enterprises have the highest cloud adoption rate with Small enterprises (38%) coming second and large enterprises (26%) coming last. However this trend is most likely to change: a survey conducted by Edge strategies in 2011 indicates that 74% of SMBs plan to use at least one cloud service in next 3 years. The same survey indicates that SME favor SaaS including business email, CRM, file share, collaboration, business apps and IaaS including data storage/backup.
Business drivers for cloud adoption..
- Server virtualization: Out of 50M physical servers today, 60% of server workloads would be virtualized by 2013
- Low TCO: IBM estimates that cloud adoption would reduce IT costs by 50% and improve capital utilization by 75%.
- Business agility: Sandhill survey indicates that 50% of its respondents cited agility as the key driver to move to cloud platform; similarly Information week survey puts this number to 65%.
- Move towards SaaS model: IDC finds that SaaS revenue would grow 5 times faster than traditional packaged software in 2014; 34% of all new software purchases will be consumed via SaaS.
- Mobility and social computing: Mobile market is going to surpass the traditional desktop shortly and in addition to this social computing is adding lots of data each passing second. Cloud is the platform of choice for this scenario.