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What Is The Cloud?
Be Smart, Use PwrSmart
Where Did The Cloud Come From?
• We get the term “Cloud” from the early days of the
internet where we drew a fluffy cloud to define a
network of remote computers.
• 1st Cloud was TCP/IP, Networking Abstraction
• 2nd Cloud was WWW , Data Abstraction
Our Cloud has evolved!
The cloud Today - Abstracts infrastructure complexities
of servers. Heterogeneous platforms, Applications, and
Data.
The Cloud – It’s Constantly Evolving.
• Cloud computing is a model for enabling
convenient, on-demand network access to a
shared pool of configurable computing resources.
(e.g., networks, servers, storage, applications,
and services) that can be rapidly provisioned and
released with minimal management effort, or
service provider interaction.
• This cloud model promotes availability and is
composed of five essential characteristics, three
service models, and four deployment models.
FIVE – Characteristics Of Cloud
1. On-demand self-service
2. Broad network access
3. Resource pooling
- Location independence
4. Rapid elasticity
5. Measured service
Three – Cloud Service Models
• Cloud Software as a Service (SaaS)
– Use provider’s applications over a network
• Cloud Platform as a Service (PaaS)
– Deploy customer-created applications to a cloud
• Cloud Infrastructure as a Service (IaaS)
– Rent processing, storage, network capacity, and other
fundamental computing resources
Software as a Service - Definition
•Cloud Software as a Service (SaaS). The capability
provided to the “end user” to use applications running on a
cloud infrastructure and accessible from various client
devices through a thin client interface such as a Web
browser or application.
•The consumer does not manage or control the underlying
cloud infrastructure, network, servers, operating systems,
storage, or even individual application capabilities, with the
possible exception of limited user-specific application
configuration settings.
Four – Cloud Deployment Models
• Private cloud
– enterprise owned or leased
• Community cloud
– shared infrastructure for specific community
• Public cloud
– Sold to the public, mega-scale infrastructure
• Hybrid cloud
– composition of two or more clouds
The Cloud Framework
Hybrid Clouds
Deployment
Models
Service
Models
Community
Cloud
Private
Cloud
Software as a
Service (SaaS)
Public Cloud
Platform as a
Service (PaaS)
Infrastructure as a
Service (IaaS)
On Demand Self-Service
Essential
Characteristics
Common
Characteristics
Broad Network Access
Rapid Elasticity
Resource Pooling
Measured Service
Massive Scale
Resilient Computing
Homogeneity
Geographic Distribution
Virtualization
Service Orientation
Low Cost Software
Advanced Security
8
Which IaaS Does NBT Use?
• GoGrid. It’s not a server sat under a developer’s
desk in Minneapolis.
• Better Management Tools than EC2, Salesforce,
and Rackspace.
• 24/7 Phone Support
• 100% Uptime SLA
• Dedicated Support Teams
• f5 Hardware Load Balancing
• Multiple Datacenter Provisioning
GoDrid IaaS
Positives to the Cloud
• Cloud computing leverages:
– Massive scale
– Homogeneity
– Virtualization
– Resilient computing
– Low cost software
– Geographic distribution
– Service orientation
– Advanced security technologies
Negatives to the Cloud
• Trusting vendor’s security model
• Indirect administrator accountability
• Loss of physical control
• Data dispersal and international privacy laws
–
EU Data Protection Directive and U.S. Safe Harbor
program
– Exposure of data to foreign government and data
subpoenas
– Data retention issues
• Lease or Purchase Software