DEV Community: Anusha V

AWS Global Infrastructure

Anusha V — Sat, 26 Mar 2022 02:31:08 +0000

Note:- Images are taken from amazon official website

Let's see about AWS Global Infrastructure,

What is AWS Cloud Infrastructure?
AWS Cloud Infrastructure is a more secure, extensive and reliable service by cloud provider. where user can deploy their application in less than a minute in a region( i.e., Geographical area) and make it available globally and user can also deploy their particular application, which is close to their large population users to provide High latency- AWS have AWS Local Zones and to provide services with ultra-High-latency- AWS have AWS Wavelength Zones.

Region:-

Region is a geographical area or location from where AWS serves its services to its end users or an customer. At present, we have 26 Regions and each region have two or more Availability Zones(AZ).

A grouping of AWS Resources or services within a geographical location is called a Region. To understand it, clearly - some AWS Services are not available in India. It will be available in Northern Virginia Region. So, if we want to use that unavailable services in India, we can go with Northern Virginia Region.

Availability Zones:-

As we said before, there are one or more availability Zones within in a region. Availability zones is nothing, but an Physical Data Centers located in various locations within a region. At present, there are two availability Zones(AZ) in India one is at Mumbai and another one is at Chennai and Mumbai is an main center.

Advantages of having Availability Zones is to reduce Redundancy of services provided by AWS and to provide High Speed Access of AWS Resources or Services to customers.

To control fault tolerance and failure of particular Availability Zone, customer can Backup their application server or its database in another availability Zone. So, their end users can access that application without any delay.

We will take an Scenario, If we have PHP-web Application running in two web servers and in one database server. if the connectivity of application server to the database in that particular availability zone fails, application will not go down instead backup of its database connectivity in another Availability Zone will continue to serve the user.

Edge Locations:-

Edge locations are Content Delivery Network(CDN) end points, it's just aN expansion of a region.

We will take an Scenario, if we are accessing the server which is at London from India there can be time delay to serve the content so, AWS came up with Edge Locations where data / content are cached and stored.

let's return back to our scenario:- When user request to content which is in London server, it will search in edge location and if data not found then, it will go to London server and return to Edge location it will be cached and stored. If second time any user try to access same content, again it will not go to London Server, instead it will return the content from edge locations.

You can also refer to this, to know more information about Regions, Availability Zones and edge Locations https://aws.amazon.com/about-aws/global-infrastructure/

AWS Local Zones:-

AWS Local Zones serve compute, storage and networking and other AWS Services to end users at the High speed. With AWS Local Zones, you can deploy and run High Demanding applications like Media & Entertainment applications, gaming applications, etc., without low latencies to end users.

AWS Local Zones provide High Bandwidth and secure connection between local workloads and those in AWS Region.

Example:- Netflix

In AWS Local Zones we will be moving our deployed application from our Virtual Private network to AWS Local Zones securely and serve to end users.

AWS Wavelength Zones:-

AWS Wavelength Zones are there to provide ultra-low latency applications across 5G Networks. Applications like video streaming, for Machine Learning Models, etc., are deployed in AWS Wavelength Zones.

Application part which is need to be deployed in Wavelength Zones, first we will move Virtual Private Network to Wavelength Zone and then we will create an Amazon EC2 instance in the desired availability Zone within a Region.

we can also deploy specific part of application to wavelength Zone and keep rest of application in the AWS Region(i.e., under desired Availability Zone).

Conclusion:-

Next, I will be moving to IAM - Identity Access Management Concept.

Basics of Cloud Computing

Anusha V — Sun, 20 Mar 2022 17:14:40 +0000

This blog is an learning path of my cloud computing Journey!

Before talking about Cloud Computing! Let's imagine the scenario before cloud computing come into action. If the company need to provide the IT Resources to the users or within the organization that particular organization should build their own Physical Data Center and it is difficult to maintain it. There will be a data loss during natural disaster and it is not an easy process to recovery the data and software Integration also take more time to get updated, etc..

What is Cloud?

Cloud is something located in Remote Location.
Cloud is not a single machine, it consists of Millions of Computers(i.e., Data Center).

What is Cloud Computing?

Cloud Computing is a on-demand delivery of IT Infrastructure(i.e., Data Center) via internet to give access to technologies services such as compute, storage and networking on needed basis "pay-as-you-go" from the cloud Service Providers. Instead of building Physical Data Centers and Servers and maintaining it. Some of the Cloud Service Providers are AWS, AZURE, GOOGLE CLOUD.

Types of Cloud:-

There are four types of cloud, are

Public Cloud
Private Cloud
Community Cloud
Hybrid Cloud

Public Cloud:-
Public cloud model is an on-premises Data Center which is shared among different organizations by Cloud Service Provider. There are lot of IT services offered and organizations can use it according to their size and scale and pay for what they used! Cloud Service Provider is responsible for developing and managing the Cloud Computing Resources.

Private Cloud:-
Private cloud is a cloud model in which cloud computing resources are used by single organization via secure private network and not shared with other organizations or customers. Data Center can be a on-premises or from third party vendors.

Community Cloud:-
Cloud computing resources are shared together by two or more organizations, we called it as Community Cloud.

Hybrid Cloud:-
As an word sounds! Hybrid cloud is a mixture of Public and Private Cloud. we can use public cloud to reduce the traffic or work loads and store data that are not sensitive and use private cloud to store sensitive data or information to secure it.

Types of Services in Cloud Computing:-

Iaas - Infrastructure as a Service
Paas - Platform as a Service
Saas - Software as a Service

As an above picture depicts,

In On-Premises(Traditional way of IT Infrastructure) we the user or any organization who want to host any application or any other IT Resources we need to build and manage everything Physically.

In Infrastructure as a Service, Cloud Service Provider will provide and maintain the Data Center(i.e., Server, Storage and Networking) and OS Installation setup to the user and user are responsible to maintain the Runtime Environment like installing extra servers needed(eg:-node.js etc..) and also Scalability of servers. Example:-Virtual Machine[Which is server that run the various Operating system and act as full computing platform].

In Platform as a Service, cloud service provider will provide all the Data Center Setup, OS Installation, Runtime Environment installations and maintain Scalability of servers and user can only take care of their Application development and Business
improvement.

In Software as a Service, Cloud Service Provider will take care of all the Data Center, OS Installation, Runtime Environment, Scalability of servers and user need to provide only the code for the application.

Note:- Image is taken from the internet resources

Benefits of using AWS Cloud Computing:-

Cost Efficient - We pay for what we use.
Scalability - When the Traffic is higher or lower according to that Paas and Saas services can scale the servers needed by itself automatically and incase of Iaas, user needs to manually make the scaling needed.
Reliability - When there is a need of extra servers within a minute we can change it without letting servers go down!
Go Global In Minute - Within a minute, we can host our application in AWS and from any part of world we can access it. Amazon has its data center all over world to provide services in faster speed rate.
Data Backup / Recovery - Using cloud computing we can avoid data loss occurring due to natural disasters etc.. we can easily backup our data.
Automatic Software Integration - Software can be updated automatically by Cloud Service Providers in Paas, Saas Service Models and incase of Iaas Service model it should be done by user.

Conclusion:-

My first set of learning part of Cloud Computing basics is done and I will move further with AWS Cloud Concepts.