Datacenter Vs Cloud

Which is the problem of the datacenter

Pay for the rent for the data center

Pay for power supply, cooling, maintenance

Adding and replacing hardware takes time

Scaling is limited

Hire 24/7 team to monitor the infrastructure

How to deal with disasters? (earthquake, power shutdown, fire…)

What is Cloud ?

Cloud computing is the on-demand delivery of compute power, database storage, applications, and other IT resources

Through a cloud services platform with pay-as-you-go pricing

You can provision exactly the right type and size of computing resources you need

You can access as many resources as you need, almost instantly

Simple way to access servers, storage, databases and a set of application services

Amazon Web Services owns and maintains the network-connected hardware required for these application services, while you provision and use what you need via a web application.

The Deployment Models of the Cloud

Private Cloud

Cloud services used by a single organization, not exposed to the public.

Complete control

Security for sensitive applications

Meet specific business needs

Public Cloud

Cloud resources owned and operated by a thirdparty cloud service provider delivered over the Internet.

Six Advantages of Cloud Computing

Hybrid Cloud

Keep some servers on premises and extend some capabilities to the Cloud

Control over sensitive assets in your private infrastructure

Flexibility and cost-effectiveness of the public cloud

The Five Characteristics of Cloud Computing

On-demand self service: Users can provision resources and use them without human interaction from the service provider

Broad network access:Resources available over the network, and can be accessed by diverse client platforms

Multi-tenancy and resource pooling: Multiple customers can share the same infrastructure and applications with security and privacy • Multiple customers are serviced from the same physical resources

Rapid elasticity and scalability: Automatically and quickly acquire and dispose resources when needed • Quickly and easily scale based on dema

Measured service: • Usage is measured, users pay correctly for what they have used

Six Advantages of Cloud Computing

Trade capital expense (CAPEX) for operational expense (OPEX)

Pay On-Demand: don’t own hardware

Reduced Total Cost of Ownership (TCO) & Operational Expense (OPEX)

Benefit from massive economies of scale

Prices are reduced as AWS is more efficient due to large scale

Stop guessing capacit

Scale based on actual measured usage

Increase speed and agility

Stop spending money running and maintaining data centers

Go global in minutes: leverage the AWS global infrastructure

Problems solved by the Cloud

Flexibility: change resource types when needed

Cost-Effectiveness: pay as you go, for what you use

Scalability: accommodate larger loads by making hardware stronger or adding additional nodes

Elasticity: ability to scale out and scale-in when needed

High-availability and fault-tolerance: build across data centers

Agility: rapidly develop, test and launch software applications

Types of Cloud Computing

Infrastructure as a Service (IaaS)

Provide building blocks for cloud IT

Provides networking, computers, data storage space

Highest level of flexibility

Easy parallel with traditional on-premises IT

For Example

Amazon EC2 (on AWS) • GCP, Azure, Rackspace, Digital Ocean, Linode

Platform as a Service (PaaS)

Removes the need for your organization to manage the underlying infrastructure

Focus on the deployment and management of your applications

For Example

Elastic Beanstalk (on AWS) • Heroku, Google App Engine (GCP), Windows Azure (Microsoft)

Software as a Service (SaaS)

Completed product that is run and managed by the service provider

For Example :

Many AWS services (ex: Rekognition for Machine Learning)

Google Apps (Gmail), Dropbox, Zoom

Pricing

AWS or Google Cloud has 3 pricing fundamentals, following the pay-as-you-go pricing model

Compute: Pay for compute time

Storage: Pay for data stored in the Cloud

Data transfer OUT of the Cloud: • Data transfer IN is free

Solves the expensive issue of traditional IT