Understanding Cloud Computing

Understanding Cloud Computing

What the say:

“Biggest Paradigm Shift in 20 years”

“Game Changers”

“Tremendous Cost Cutting”

“Just On”“Pay As You Go”

Describe The Cloud To Me

21 experts are defining cloud computing http://bit.ly/C6jIm

The Cloud

*Picture taken under Creative Common license

First, What the heck isCloud Computing

First, what the heck is

Cloud Computing?…in simple, plain English please!

Let’s use a simple analogy

Say you just moved to a city, and you’re looking for

a place to live

You can either

Build a house or

Rent an apartment

If you build a house, there are a few

important decisions you have to make…

How big is the house?

are you planning to grow a large family?

Remodel, addition typically cost a lot more once the house is built

But, you get a chance to

customize it

tileflooring

Roof floor plan

landscaping

windows

lighting

Once the house is built,

you’re responsible for maintenance

Hire LandscaperElectricianPlumber

Pay property tax

Electricity Water

Gutter CleaningHeating and Cooling House Keeping

How about renting?

Consider a builder in your city builds

a massive number of apartment units

A unit can easily be converted into a 2,3,4 or more units

You make a fewer,

simpler decisions

You can start with one unit and grow later, ordownsize

But…You do not have

a lot of options to customize your unit

However, builders provide you with

very high quality infrastructure

high speed Internet

high capacity electricity

triple pane windows

green materials

No need to worry about maintenance cost

No need to Hire landscapers,

electricians, plumbers

Just pay your rentand utilities

Pay as You Go

Let’s translate to

Cloud Computing?

As an end-consumer, believe it or not

you’ve been using Cloud for long times

But you’ve been enjoying

High Reliability Service

Unlimited Storage

Connecting, Sharing

How it WORKS: Cloud Computing

How have we managed our IT?Developer-led– Concurrent Versioning, Unit Testing, Maven, Ant, Capistrano– Focused on code-promotion ; sometimes database transform

Manager-led– One extreme: firefighting– The other extreme: bureaucracy

Architect-led– Round-trip modeling tools (e.g. Rational UML, Together, etc.)– Gated reviews (i.e. “The technology cops”)

Operations-led– Management suites (OpenView, Tivoli, etc.)– Runbook Automation (e.g. HP/OpsWare, Digital Workflow, BMC/BladeLogic,

Opalis)

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IT Infrastructure Library (ITIL) v3:The Current Best Practice?

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How Far Can Technology Save Us?

The “Google Secret Sauce” Theory:

– Always available, scalable, fast– Computing as fungible commodity– Reliability is enabled by architecture– But you have to rewrite your software

Does a seemingly magical architecture reduce or eliminate the need for configuration & dependency management?Does this architecture match classic enterprise requirements?

If I spill this on aserver, who

is affected, and by how much?

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Qualities of an Enterprise Cloud• On-Demand, Services-Oriented Computing

– Drastically reduced lead times– Lowered requirement to call-ahead forecasts– Demand trends are predicted by the provider

• Variable cost consumption– Pay-by-the-drink or over time; decouple fixed overhead from demand

• Self-service– Resources directly/indirectly reserved with a GUI or API

• Elastic Scalability– Grow or shrink resources as required

• Mandatory Network– The network is essential to consume the service

• Governance and Compliance– Tracking and matching of cloud providers to policies

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Your data is replicated3 or 4 times in their data center

High Availability

Adding “servers” is a click away. Running in just minutes, not days

Hig

h T

raffi

c?

It can even load balance your server traffic

Expect your Cloud

Networkis always up

Yes, you can even pick

where your data and “servers” reside

Business Contraction?

Just reduce your

computing power, storage

Wait, What is the catch?

Not many software written yet to take

advantage of cloud infrastructure

Sensitive Data in the Cloud?are there yet?

Data at Rest

Data in Motion

Encryption

Yes, you’re loosing some controls

physical securitysome configurations

only subset of APIs

Let’s clear common confusionsabout Cloud Computing

Who is paying whom?

Typical Scenarios

You(Business, Individual)

Software/ServiceProviders

Cloud/InfrastructureProvider

You may also build softwaredirectly on the provider’s platform andpay them directly

Do I have to start over?

In some cases, you could redirect your data to the cloud

Migrate Data to the Cloud

Before

In some cases, you could redirect your data to the cloud

After

However, to take advantage fully, migrate all or create new apps on the cloud

Employees

Customers

Suppliers

Is this just Hosting 2.0?

No, they have different architecturesand business model

Cloud Players Hosting Players

Only few can afford billions dollar investment on data centers

Hundreds of them aroundthe world

Hosting Players

Often yearly

Your contracts

Cloud Players

Pay As You Go

Pay only what you use

Hosting Players

Reliability, High Availability, Capacity Elasticity

Cloud Players

Built-in Redundancy

Virtually unlimited storage, computing power

You have to manage reliability, fail over yourself

Bring your own or rentservers to increase capacity

The end of PC ?

Most cloud applications that will be built are accessible from PC. Applications can be a browser base, applicationrunning on PC accessing data and services on the cloud

NO

So will the mobile applications