AWS (Amazon Web Services) is one of the most popular Cloud Computing platforms used in numerous organizations. Most organizations have adopted it, and others are on the verge of it. Most companies are shifting their business to the cloud because of its numerous features that allow them to store their data easily without the need for a physical space. Accessing data has also become easier as they can do that from anywhere at any time using the Internet. AWS-certified professionals are one of the highest in-demand professionals today.
According to the jobs posted on LinkedIn, there are over 101,000 jobs open for professionals certified in AWS in the United States alone.
We will define AWS in detail in this blog. Some of the topics that we will discuss are mentioned below in AWS overview:
Before reading in detail about AWS, take a look at this video to visualize some of the concepts:
What is AWS?
AWS full form is Amazon Web Services. Previously a factory would typically build an electricity plant and use it for their purposes. Then power experts would manage electricity plants to provide reliable power supply at a very low cost to these factories as a whole. The electricity could be generated with greater efficiency and the price in this model is also low. AWS cloud follows a similar model where instead of building large scale infrastructures, companies can opt for Amazon Cloud Services where they can get all infrastructure they could ever need.
AWS is a growing cloud computing platform which has a significant share of Cloud Computing with respect to its competitors. AWS is geographically diversified into regions to ensure system robustness and outages. In Japan, Eastern USA, two locations in Western USA, Brazil, Ireland, Singapore, and Australia regions there are central hubs in place. There are over 50 services like application services, networking, storage, mobile, management, compute and many others which are available for the client easily.
To enterprises, start-ups; services can quickly be deployed without these firms needing much capital. As AWS is closely collaborating with GE, Pinterest and MLB the cloud clients can pin, power and play with the features in AWS cloud. Let’s now dig into the components of AWS.
What are AWS components?
To assess the cloud computing capabilities of AWS we have to first look into the core components of the cloud. There are various components of AWS but we are elucidating on only key components.
Also known as Amazon compute, AWS has mainly EC2 (Elastic cloud compute) and ELB (Elastic load balancing) as the lead computing services. It is due to the virtue of these instances that companies can scale up or down based upon need. System admins and developers use EC2 instances to get hold and boot the computing instances in the cloud. The pricing is based on usage. The first timers to AWS get around 750 hours of EC2 per month for the first year. But beyond that they have three pricing models like on-demand, spot instance and reserve instance.
Depending on location, size, complexity and storage requirements on-demand prices range from $0.13 to $4.60.
Reserve instance pricing is where the users are expected to reserve the instance well in advance in the range of one to three years. AWS offers upto 75% discount on on-demand pricing when users reserve the cloud instances.
Spot instance pricing lets users bid on compute instances that are not used. Spot prices differ based on usage, time of day, week or month.
For less human intervention and fault tolerance, AWS ELB distributes the applications widely throughout the EC2 instances. The ELB service is free within 15GB of data processing and 750 hours of monthly service for a year. Larger loads are charged on an hourly basis and each GB transferred.
“When I get into complex customer situations that leverage combinations of AWS services, AWS Certification has allowed me to immediately add value.”
– Ryan Fackett, Director, Foghorn Consulting, Advanced APN Consulting Partner, AWS Certiifed Solutions Architect – Professional
Amazon’s Simple Storage Service (S3), Elastic block storage (EBS) and CloudFront are the three storage choices of Amazon. Storage in AWS is provided through pay-as-you-go model. Amazon S3 is a storage offering of AWS that can store any amount of storage which is required. It is used for various reasons like content storage, backup, archiving and disaster recovery, and also data analysis storage.
Go through this AWS Interview Questions And Answers to excel in your Interview.
Along with free EC2 instance for the first year, AWS also offers 5GB of cloud storage and 20,000 GET requests and 5,000 PUT requests from S3 free for the first year. After first year the pricing is $.0300 for 1GB upto 1TB per month. EBS is very helpful in scaling the EC2 instances. Pricing is based on geographic regions like the disk technology used and the GBs of provisioned storage required. CloudFront is a great storage option for developers and business organizations which facilitates low latency and high data transfer speeds.
Along with in-memory caching and data warehousing facility in the range of petabytes AWS also scales relational and NoSQL databases. DynamoDB is the NoSQL database which offers high scale, low cost storage. Using EC2 and EBS, users can operate on their own databases in AWS. Relational Database Service(RDS) and Amazon Redshift are the two database services from AWS.
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To operate and scale MySQL, Oracle, SQLServer or PostgreSQL servers on AWS, Amazon RDS is used. Based on the instance hours and storage amount, RDS pricing is used. Redshift is a data warehouse service through which users can store data in columns rather than in rows. Pricing is based on the instance hours like $0.25 per hour.
Administration and security
AWS Directory Service directly links AWS clouds to on-premises. CloudWatch monitors cloud resources of Amazon Web Services. AWS CloudTrail records API calls for user AWS accounts. CloudTrail does this for no charge at all.
Amazon VPC (Virtual Private Cloud) provides a versatile networking capability in AWS which means that it provides built-in security and a private cloud. VPC comes free with EC2. AWS Direct Connect Service lets users directly connect to the cloud bypassing the internet. It is priced on an hourly basis.
AWS technology offers services for data analytics on all fronts like Hadoop, orchestration and real-time streaming and data warehousing. EMR (Elastic MapReduce) is the analytics facilitator which is used by the Businesses, data analysts, researchers and developers to process data chunks. Pricing is done on an hourly basis. Redshift also provides some analytics capabilities.
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To automate workflow between different services Amazon SQS (Simple Queue Service) is used. A dedicated queue is present which is used in storing messages. The service is free upto 1 million messages per month and after that $0.50 is charged for every million messages.
SWS (Simple Workflow Service) is a task management and co-ordination service for AWS. 10,000 activity tasks, 30,000 workflow days and 1,000 initiated executions for a year are free for users. Above that per workflow users pay around $0.0001.
Deployment and management
Elastic Beanstalk uses Java, .NET, PHP, Node.js, Python and Ruby to deploy and scale web applications. Application health and log files can be easily monitored. CloudFormation helps businesses and developers gather and provision important AWS resources.
Amazon Cognito and Mobile Analytics are two popular AWS mobile services. Cognito IDs users and syncs data across their mobile devices. Upto 10GB of cloud sync storage and 10 lakh sync operations per month are free here. Beyond that users are liable to pay around $0.15 for every 10,000 operations.
Usage data within 60 minutes is delivered by Mobile Analytics which tracks applications at scale. Upto one million events usage is free and above that the pricing is $1 for every million.
How does AWS work?
You basically need to sign into an account with the AWS. This would require credit card details from your part. Upon creating the account you can start exploring AWS Management Console and view their services. Amazon hosts in its site 10-minute tutorials in launching a Virtual Machine with Amazon EC2, using S3 how you can upload files to the cloud and also using DynamoDB how you can create and query a NoSQL database. These are only from compute section and you can view the same how-to videos on database, developer AWS tools, messaging, storage and content delivery and much more.
“If we wouldn’t have gone through AWS training then our progress would have much slower. There would have been a lot of pitfalls.”
– Christian Boehm, Head, Data center infrastructure, Siemens
Who uses AWS?
The pay-as-you-go model is a great benefit for those who can’t afford an in-house infrastructure. Startups especially face this situation. They are usually cash strapped and seek cloud services to fulfill their infrastructure requirements. Amazon says that the active users of its cloud are over 10 lakh.
Small, medium firms and startups make up majority of that space with enterprise users being just around 1 lakh.
- Unilever is reaping the benefits of using AWS in increased speed at which marketing campaigns can be made and so forth.
- You can go through an exhaustive case study of Netflix on how it used AWS to grow massively in its game.
- Without the added cost of maintaining a separate datacenter Kellogg uses multiple AWS availability zones which provides high availability.
- GE achieved a whopping 52% reduction in overall ownership cost by migrating over half of its core applications to AWS
- Zynga now can easily plan, test and develop proof of concepts (PoCs) without having to commit to long-term fixed IT assets.
- Xiaomi was able to quickly launch a new online business as they could satisfy the download speed that users worldwide required all by using AWS.
- To carry out computations for research and development Pfizer needed a secure environment which it got through AWS’s Virtual Private Cloud (VPC).
- Samsung was able to deploy Samsung Printing Apps Center which provides scalability to handle periods using AWS
Why use AWS?
EC2 units give world class performance at an hourly rate and 90% of the time traditional hardware is not used by large corporates. Huge maintenance is required for that kind of hardware which has to be considered also. During peak hours there is a chance that the hardware may not be sufficient in providing competent service. Hence if the organization had shifted to AWS all of these woes could essentially come to an end. Companies needn’t worry over the maintenance and the cost involved with it. No matter how much demand there is, this cloud service can scale to that level. It is also helpful in big data analytics. In AWS code deployment can be achieved continuously as DevOps processes are expertly supported.
Scalability and adaptability of AWS
Scalability and adaptability are some terms which define AWS. Building a business from scratch is tough. AWS lightens the load in this regard as it provides all the tools which the companies can use to get started on the cloud. The cost of migration is low where enterprises can migrate their services from their existing infrastructure to that of the AWS. As we have said Netflix is the best example to this as almost every instance of the company has been migrated to the AWS cloud.
As the AWS services can be flexibly used, customers needn’t worry over about their computing usage. The usage can be very high or very low and the AWS will scale for whichever way the company wants. This high adaptability is what this cloud service stands for truly.
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AWS’s security and reliability
Compared to a company website that is self-hosted, AWS is more secure. Dozens of data centers across the world are continuously monitored and has a vigilant team watching over it. As the data centers are spread out, a natural disaster or outage at one location won’t affect other data centers. If you think that is bad then consider this.
How safe do you think the data is if all of it is centered in one location where many people can get their hands on it. This is the case with most of the enterprises. The location of these data centers in the case of AWS are kept top secret and any issues pertaining them will be cleared promptly.
Here’s a video from Intellipaat on AWS Lambda:
The reason why Amazon is so huge is because of AWS along with its retail arm. We have already said that AWS offers upto 75% discount when the instances are reserved in advance. We all know that this cloud service is in huge profit and is growing rapidly. This itself says that inspite of providing services at such discounted rates AWS is able to rake that much in profits then imagine how many users are massively using it. Did you know AWS’s IaaS cloud is 10 times greater than the 14 competitors of AWS combined? Stats like this are only possible because of strong capability which this service provides. Even then large enterprises are ever hesitant to make transition to this cloud computing platform as we said earlier mainly pinpointing security issues. But again we would like to reiterate the case of Netflix which grew tremendously using Amazon Web Services. Therefore, enterprises can leverage on AWS to achieve such a feat in their own game too. If you own an enterprise then use AWS for infrastructure, if you are a developer, engineer, data professional etc. try out the AWS free instances at least, if you are a stock trader then buy the stocks of Amazon before large enterprises realize the potential in AWS.
Want to work with AWS instances? Ready to be an AWS solutions architect? Then Intellipaat’s AWS Solutions Architect Certification Training is there for you. Do let us know in the comments section if this blog on what is Amazon Web Services was useful for you!