What's that "Cloud" thing...

Nir Cohen @

nir0s@github

@thinkops

What is an application?

• Compute
• Network
• Storage
• Electricity...
• Cooling...
• Redundancy...
• WAN...

Infrastructure

• Database
• Web Server
• Load Balancer
• Runtime Environment
• ...

Middleware

Code

=

How it was before

• Purchase physical servers, firewalls and storage as needed.
• On-premise (Bare Metal or Virtualized)
• Manually maintained

• Usually not cost-effective.
• Extremely slow response time
• Slower to scale - growing slower

aaS

Something as a Service - that's provided by someone else

• Infrastructure as a Service
• Platform as a Service
• Software as a Service
• ...

IaaS

PaaS

SaaS

Cloud ~= IaaS

by common reference

From a developer's perspective, an IaaS is simply an API to manage Infrastructure.

Infrastructure as Code

 import boto.ec2

 conn = boto.ec2.connect_to_region('us-west-2',
                                   aws_access_key_id='Adi83AS00KI',
                                   aws_secret_access_key='Adi83AS00KI')
 conn.run_instances('ami-if21oms',
                    key_name='myKey',
                    instance_type='t2.micro',
                    security_groups=['my_group'])

Cloud == IaaS+PaaS+SaaS

in real life

Cloud services span across the entire application.

Monitoring (SaaS)

Database (PaaS)

my Code on a Server (IaaS)

So, what's changed?

The Evolution

Better application management than before

• On-demand compute, storage, network
• Logistics and maintenance supplied by vendor
• On par with fast growth of business

The Revolution

Replacing Humans; Reducing Error Rates

• Allows to automate processes
• Repeatable work flows
• Pay by usage - anyone can start a business

Example

Auto-scaling

Example

SDN

The Future

jobs@gigaspaces.com

http://jobs.gigaspaces.com