Public clouds (or external clouds)

Storage as a Service 

• Storage as a Service 

• Data(base) as a Service (DaaS)

• Process as a Service - Business Process as a Service

• Network as a Service (NaaS)

• Integration as a Service 

• Security as a Service - Identity as a Service

• Testing as a Service

http://www.ibm.com/ibm/cloud/

• http://www.ibm.com/ibm/cloud/

• « Values to customers include:

• Reducing IT management complexity and skill requirements
• Sharing resources among multiple applications
• Accelerating application launches
• Supporting both existing and emerging, data-intensive workloads

• »

From the customer point of view:

• From the customer point of view:

• Scalability
• Reliability
• Flexibility
• Cost
• Security and Privacy
• Performance
• Ubiquitous and fast access
• Quality of Service
• Service Level Agreement
• Pricing system
• Simple to use

• From the internal point of view

• Virtualization
• « Grid » management

Compute Cloud EC2 (Elastic Cloud Computing)

• Compute Cloud EC2 (Elastic Cloud Computing)

• pricing: http://aws.amazon.com/fr/ec2/pricing//185-8840065-1558013/
• « private » virtualized servers (« instances ») of different types
• example: High-CPU Extra Large Instance
• 7 GB of memory
• 20 EC2 Compute Units
• 1690 GB Storage
• Pricing on a per hour basis for each instance type: from $0.085/hour for the small standard "On-Demand" virtual machine running Linux to 29x more for the largest one running Windows (Jan. 2011). The data transfer charge ranges from $0.08 to $0.15 per gigabyte, depending on the volume

• Data Cloud S3 (Simple Storage Service)

• pricing: http://aws.amazon.com/fr/s3/pricing/
• from $0.055 to $0.14 per GB-month (standard storage), + bandwidth usage (from $0.05 to 0.12 per GB – EU price) + requests (from $0.001 to $0.01 per 1000 requests)
• 556 stored billion objects (Oct. 2011) (Marc 2010: 102 billion objects)
• data transfer is charged by TB / month data transfer, depending on the source and target of such transfer.

Compute :

• Compute :

• connection to the « Compute » service > 99,95%
• Web and Worker roles > 99,9%
• note : service interruption  interruption > 5 mn

• Storage

• « failed » transactions (error rate) < 0,1%
• credit = 10%
• if 0,1% <= error rate < 1%
• Credit = 25%
• if error rate >= 1%

Gartner:

• Gartner:

• identifies the Cloud as one of the four trends that will change IT and the economy in the next 10 years
• (http://www.gartner.com/it/page.jsp?id=1470115)
• predicts that the value of Cloud Computing will surge to 150.1 billion dollars by 2013
• expects SaaS demand to continue to growth to a total of more than 14 billion dollars by 2013

• IDC [BBE10]:

• the market for private enterprise Cloud servers will grow from an $8.4 billion opportunity in 2010, to a $12.6 billion market in 2014
• SaaS revenue will grow five times more than traditional software
• by 2014, about 34% of all new business software purchases will be consumed via SaaS.

• Steve Ballmer (Microsoft's CEO) (March 2010):

• about 75% (90% in a year) of Microsoft customers are doing entirely cloud based or entirely cloud inspired

• Information Systems Audit and Control Association (ISACA):

• 33% among all European organizations are using cloud computing systems