Aws over view_demoppt

AWS
Overview
- by
Subramanyam Tirumani Vemala

•Amazon Web Services, AWS is a Cloud Platform.
•AWS consists of many cloud services that you can use
in combinations tailored to your business or
organizational needs.
•This section introduces the major AWS services by
category.

What Is Cloud Computing?
• Cloud computing is the on-demand delivery of IT resources and applications via the Internet
with pay-as-you-go pricing. Whether you run applications that share photos to millions of mobile
users or deliver services that support the critical operations of your business, the cloud provides
rapid access to flexible and low-cost IT resources.
• With cloud computing, you don’t need to make large up-front investments in hardware and
spend a lot of time managing that hardware. Instead, you can provision exactly the right type and
size of computing resources you need to power your newest bright idea or operate your IT
department.
• With cloud computing, you can access as many resources as you need, almost instantly, and only
pay for what you use. In its simplest form, cloud computing provides an easy way to access
servers, storage, databases, and a broad set of application services over the Internet. Cloud
computing providers such as AWS own and maintain the network-connected hardware required
for these application services, while you provision and use what you need for your workloads.

Advantages of cloud computing
With the ability to reconfigure the computing environment quickly to adapt
to changing business requirements, organizations can optimize spending.
Capacity can be automatically scaled up or down to meet fluctuating usage
patterns. Services can be temporarily taken offline or shut down
permanently as business demands dictate. In addition, with pay-per-use
billing, AWS Cloud services become an operational expense instead of a
capital expense.
While each organization experiences a unique journey to the cloud with
numerous benefits, six advantages become apparent time and time again, as
illustrated in Figure.

Six Advantages of Cloud Computing
• Trade capital expense for variable expense:
Instead of having to invest heavily in data centers and servers before you
know how you’re going to use them, you can pay only when you consume
computing resources, and pay only for how much you consume.
• Benefit from massive economies of scale:
By using cloud computing, you can achieve a lower variable cost than you
can get on your own. Because usage from hundreds of thousands of
customers is aggregated in the cloud, providers such as AWS can achieve
higher economies of scale, which translates into lower pay as-you-go prices.

• Stop guessing about capacity:
Eliminate guessing on your infrastructure capacity needs. When you make a
capacity decision prior to deploying an application, you often end up either sitting
on expensive idle resources or dealing with limited capacity. With cloud computing,
these problems go away. You can access as much or as little capacity as you need,
and scale up and down as required with only a few minutes’ notice.
• Increase speed and agility:
In a cloud computing environment, new IT resources are only a click away, which
means that you reduce the time to make those resources available to your
developers from weeks to just minutes. This results in a dramatic increase in agility
for the organization, since the cost and time it takes to experiment and develop is
significantly lower.
• Stop spending money running and maintaining data centers:
Focus on projects that differentiate your business, not the infrastructure. Cloud
computing lets you focus on your own customers, rather than on the heavy lifting
of racking, stacking, and powering servers.

• Go global in minutes:
Easily deploy your application in multiple regions around the world
with just a few clicks. This means you can provide lower latency and a
better experience for your customers at minimal cost.

Cloud Computing Deployment Models
The two primary cloud computing deployment models that we focus
are
a. “All-in” cloud-based deployments and
b. Hybrid deployments. (Both Private and Public (Cloud))
• It is important to understand how each strategy applies to
architectural options and decisions.

• An all-in cloud-based application is fully deployed in the cloud, with
all components of the application running in the cloud.
• Applications in the cloud have either been created in the cloud or
have been migrated from an existing infrastructure to take advantage
of the benefits of cloud computing.
• Cloud-based applications can be built on low-level infrastructure
pieces or can use higher-level services that provide abstraction from
the management, architecting, and scaling requirements of core
infrastructure.

• A hybrid deployment is a common approach taken by many
enterprises that connects infrastructure and applications between
cloud-based resources and existing resources, typically in an existing
data center.
• The most common method of hybrid deployment is between the
cloud and existing on-premises infrastructure to extend and grow an
organization’s infrastructure while connecting cloud resources to
internal systems. Choosing between an existing investment in
infrastructure and moving to the cloud does not need to be a binary
decision.
• Leveraging dedicated connectivity, identity federation, and integrated
tools allows organizations to run hybrid applications across on-
premises and cloud services.

AWS Fundamentals
• At its core, AWS provides on-demand delivery of IT resources via the
Internet on a secure cloud services platform, offering compute power,
storage, databases, content delivery, and other functionality to help
businesses scale and grow.
• Using AWS resources instead of your own is like purchasing electricity from
a power company instead of running your own generator, and it provides
the key advantages of cloud computing: Capacity exactly matches your
need, you pay only for what you use, economies of scale result in lower
costs, and the service is provided by a vendor experienced in running large-
scale networks.
• AWS global infrastructure and AWS approach to security and compliance
are key foundational concepts.

Global Infrastructure
• You can achieve high availability by deploying your application across
multiple Availability Zones. Redundant instances for each tier (for
example, web, application, and database) of an application should be
placed in distinct Availability Zones, thereby creating a multisite
solution.
• At a minimum, the goal is to have an independent copy of each
application stack in two or more Availability Zones.

Security and Compliance
• Organizations retain complete control and ownership over the region
in which their data is physically located, allowing them to meet
regional compliance and data residency requirements.

AWS Cloud Computing Platform
AWS provides many cloud services that you can combine to meet
business or organizational needs (see Figure).
This section introduces the major AWS Cloud services by category.

Accessing the Platform
To access AWS Cloud services, you can use the AWS Management Console, the AWS Command Line Interface
(CLI), or the AWS Software Development Kits (SDKs).
The AWS Management Console is a web application for managing AWS Cloud services. The console provides
an intuitive user interface for performing many tasks. Each service has its own console, which can be accessed
from the AWS Management Console. The console also provides information about the account and billing.
The AWS Command Line Interface (CLI) is a unified tool used to manage AWS Cloud services. With just one
tool to download and configure, you can control multiple services from the command line and automate
them through scripts.
The AWS Software Development Kits (SDKs) provide an application programming interface (API) that interacts
with the web services that fundamentally make up the AWS platform. The SDKs provide support for many
different programming languages and platforms to allow you to work with your preferred language. While
you can certainly make HTTP calls directly to the web service endpoints, using the SDKs can take the
complexity out of coding by providing programmatic access for many of the services.

Compute and Networking Services
AWS provides a variety of compute and networking services to deliver
core functionality for businesses to develop and run their workloads.
These compute and networking services can be leveraged with the
storage, database, and application services to provide a complete
solution for computing, query processing, and storage across a wide
range of applications.
This section offers a high-level description of the core computing and
networking services.

Amazon Elastic Compute Cloud (Amazon EC2):
• Amazon Elastic Compute Cloud (Amazon EC2) is a web service that
provides resizable compute capacity in the cloud.
• It allows organizations to obtain and configure virtual servers in Amazon’s
data centers and to harness those resources to build and host software
systems Organizations can select from a variety of operating systems and
resource configurations (memory, CPU, storage, and so on) that are
optimal for the application profile of each workload.
• Amazon EC2 presents a true virtual computing environment, allowing
organizations to launch compute resources with a variety of operating
systems, load them with custom applications, and manage network
access permissions while maintaining complete control.

AWS Lambda:
• AWS Lambda is a zero-administration compute platform for back-end
web developers that runs your code for you on the AWS Cloud and
provides you with a fine-grained pricing structure.
• AWS Lambda runs your back-end code on its own AWS compute fleet
of Amazon EC2 instances across multiple Availability Zones in a
region, which provides the high availability, security, performance,
and scalability of the AWS infrastructure.

Auto Scaling:
• Auto Scaling allows organizations to scale Amazon EC2 capacity up or
down automatically according to conditions defined for the
particular workload (see Figure).
• Not only can it be used to help maintain application availability and
ensure that the desired number of Amazon EC2 instances are
running, but it also allows resources to scale in and out to match the
demands of dynamic workloads. Instead of provisioning for peak
load, organizations can optimize costs and use only the capacity that
is actually needed.

Elastic Load Balancing:
• Elastic Load Balancing automatically distributes incoming
application traffic across multiple Amazon EC2 instances in the
cloud.
• It enables organizations to achieve greater levels of fault tolerance in
their applications, seamlessly providing the required amount of load
balancing capacity needed to distribute application traffic.

AWS Elastic Beanstalk:
• AWS Elastic Beanstalk is the fastest and simplest way to get a web
application up and running on AWS.
• Developers can simply upload their application code, and the service
automatically handles all the details, such as resource provisioning, load
balancing, Auto Scaling, and monitoring. It provides support for a variety of
platforms, including PHP, Java, Python, Ruby, Node.js, .NET, and Go.
• With AWS Elastic Beanstalk, organizations retain full control over the AWS
resources powering the application and can access the underlying
resources at any time.

Amazon Virtual Private Cloud (Amazon VPC):
• Amazon Virtual Private Cloud (Amazon VPC) lets organizations provision a
logically isolated section of the AWS Cloud where they can launch AWS
resources in a virtual network that they define.
• Organizations have complete control over the virtual environment,
- including selection of the IP address range,
- creation of subnets, and
- configuration of route tables and network gateways.
• In addition, organizations can extend their corporate data center networks
to AWS by using hardware or software virtual private network (VPN)
connections or dedicated circuits by using AWS Direct Connect.

AWS Direct Connect:
• AWS Direct Connect allows organizations to establish a dedicated
network connection from their data center to AWS.
• Using AWS Direct Connect, organizations can establish private
connectivity between AWS and their data center, office, or
colocation environment, which in many cases can reduce network
costs, increase bandwidth throughput, and provide a more consistent
network experience than Internet-based VPN connections.

Amazon Route 53:
• Amazon Route 53 is a highly available and scalable Domain Name
System (DNS) web service.
• It is designed to give developers and businesses an extremely reliable
and cost-effective way to route end users to Internet applications by
translating human readable names, such as www.example.com, into
the numeric IP addresses, such as 192.0.2.1, that computers use to
connect to each other. Amazon Route 53 also serves as domain
registrar, allowing you to purchase and manage domains directly
from AWS.

Storage and Content Delivery.
AWS provides a variety of services to meet your storage needs, such as
1. Amazon Simple Storage Service (S3).
2. Amazon CloudFront.
3. Amazon Elastic Block Store (EBS).

Amazon Simple Storage Service (Amazon S3):
• Highly durable and scalable object storage that handles virtually
unlimited amounts of data and
• Support large numbers of concurrent users.
• Organizations can store any number of objects of any type, such as
HTML pages, source code files, image files, and encrypted data, and
access them using HTTP-based protocols.
• Amazon S3 provides cost-effective object storage for a wide variety of
use cases, including backup and recovery, near line archive, big data
analytics, disaster recovery, cloud applications, and content
distribution.

Amazon Glacier:
• Amazon Glacier is a secure, durable, and extremely low-cost storage
service for data archiving and long-term backup. Organizations can
reliably store large or small amounts of data for a very low cost per
gigabyte per month. To keep costs low for customers, Amazon
• Glacier is optimized for infrequently accessed data where a retrieval
time of several hours is suitable. Amazon S3 integrates closely with
Amazon Glacier to allow organizations to choose the right storage tier
for their workloads.

Amazon Elastic Block Store (Amazon EBS):
• Amazon Elastic Block Store (Amazon EBS) provides persistent block-
level storage volumes for use with Amazon EC2 instances. Each
Amazon EBS volume is automatically replicated within its Availability
Zone to protect organizations from component failure, offering high
availability and durability.
• By delivering consistent and low-latency performance, Amazon EBS
provides the disk storage needed to run a wide variety of workloads.

AWS Storage Gateway:
• AWS Storage Gateway is a service connecting an on-premises
software appliance with cloud based storage to provide seamless and
secure integration between an organization’s on-premises IT
environment and the AWS storage infrastructure.
• The service supports industry standard storage protocols that work
with existing applications. It provides low-latency performance by
maintaining a cache of frequently accessed data on-premises while
securely storing all of your data encrypted in Amazon S3 or Amazon
Glacier.

Amazon CloudFront:
• Amazon CloudFront is a content delivery web service. It integrates
with other AWS Cloud services to give developers and businesses an
easy way to distribute content to users across the world with low
latency, high data transfer speeds, and no minimum usage
commitments.
• Amazon CloudFront can be used to deliver your entire website,
including dynamic, static, streaming, and interactive content, using a
global network of edge locations. Requests for content are
automatically routed to the nearest edge location, so content is
delivered with the best possible performance to end users around the
globe.

Database Services:
AWS provides fully managed Relational and NoSQL database services,
and in-memory caching as a service and a petabyte-scale data
warehouse solution.
This section provides an overview of the products that the database
services comprise.

Amazon Relational Database Service (Amazon
RDS):
• Amazon Relational Database Service (Amazon RDS) provides a fully
managed relational database with support for many popular open
source and commercial database engines.
• It’s a cost-efficient service that allows organizations to launch secure,
highly available, fault tolerant, production-ready databases in
minutes. Because Amazon RDS manages time-consuming
administration tasks, including backups, software patching,
monitoring, scaling, and replication, organizational resources can
focus on revenue-generating applications and business instead of
mundane operational tasks.

Amazon DynamoDB:
• Amazon DynamoDB is a fast and flexible NoSQL database service for
all applications that need consistent, single-digit millisecond latency
at any scale.
• It is a fully managed database and supports both document and key/
value data models. Its flexible data model and reliable performance
make it a great fit for mobile, web, gaming, ad-tech, Internet of
Things, and many other applications.

Amazon Redshift:
• Amazon Redshift is a fast, fully managed, petabyte-scale data
warehouse service that makes it simple and cost effective to analyze
structured data. Amazon Redshift provides a standard SQL interface
that lets organizations use existing business intelligence tools. By
leveraging columnar storage technology that improves I/O efficiency
and parallelizing queries across multiple nodes, Amazon Redshift is
able to deliver fast query performance.
• The Amazon Redshift architecture allows organizations to automate
most of the common administrative tasks associated with
provisioning, configuring, and monitoring a cloud data warehouse.

Amazon ElastiCache:
• Amazon ElastiCache is a web service that simplifies deployment,
operation, and scaling of an in-memory cache in the cloud.
• The service improves the performance of web applications by
allowing organizations to retrieve information from fast, managed, in-
memory caches, instead of relying entirely on slower, disk-based
databases. As of this writing, Amazon ElastiCache supports
Memcached and Redis cache engines.

Management Tools
AWS provides a variety of tools that help organizations manage your
AWS resources.
This section provides an overview of the management tools that AWS
provides to organizations.

Amazon CloudWatch:
• Amazon CloudWatch is a monitoring service for AWS Cloud resources
and the applications running on AWS. It allows organizations to
collect and track metrics, collect and monitor log files, and set
alarms.
• By leveraging Amazon CloudWatch, organizations can gain system-
wide visibility into resource utilization, application performance, and
operational health. By using these insights, organizations can react,
as necessary, to keep applications running smoothly.

AWS CloudFormation:
• AWS CloudFormation gives developers and systems administrators an
effective way to create and manage a collection of related AWS
resources, provisioning and updating them in an orderly and
predictable fashion.
• AWS CloudFormation defines a JSON-based tinplating language that
can be used to describe all the AWS resources that are necessary for a
workload.

AWS CloudFormation: AWS CloudFormation workflow summary

AWS CloudTrail:
• AWS CloudTrail is a web service that records AWS API calls for an
account and delivers log files for audit and review.
• The recorded information includes the identity of the API caller, the
time of the API call, the source IP address of the API caller, the
request parameters, and the response elements returned by the
service.

AWS Config:
• AWS Config is a fully managed service that provides organizations
with an AWS resource inventory, configuration history, and
configuration change notifications to enable security and
governance.
• With AWS Config, organizations can discover existing AWS resources,
export an inventory of their AWS resources with all configuration
details, and determine how a resource was configured at any point in
time. These capabilities enable compliance auditing, security
analysis, resource change tracking, and troubleshooting.

Security and Identity
AWS provides security and identity services that help organizations
secure their data and systems on the cloud. The following section
explores these services at a high level.

AWS Identity and Access Management (IAM):
• AWS Identity and Access Management (IAM) enables organizations to
securely control access to AWS Cloud services and resources for their
users.
• Using IAM, organizations can create and manage AWS users and
groups and use permissions to allow and deny their access to AWS
resources.

AWS Key Management Service (KMS):
• AWS Key Management Service (KMS) is a managed service that makes
it easy for organizations to create and control the encryption keys
used to encrypt their data and uses Hardware Security Modules
(HSMs) to protect the security of your keys.
• AWS KMS is integrated with several other AWS Cloud services to help
protect data stored with these services.

AWS Directory Service:
• AWS Directory Service allows organizations to set up and run
Microsoft Active Directory on the AWS Cloud or connect their AWS
resources with an existing on-premises Microsoft Active Directory.
• Organizations can use it to manage users and groups, provide single
sign-on to applications and services, create and apply Group
Policies, domain join Amazon EC2 instances, and simplify the
deployment and management of cloud-based Linux and Microsoft
Windows workloads.

AWS Certificate Manager:
• AWS Certificate Manager is a service that lets organizations easily
provision, manage, and deploy Secure Sockets Layer/Transport Layer
Security (SSL/TLS) certificates for use with AWS Cloud services. It
removes the time-consuming manual process of purchasing,
uploading, and renewing SSL/TLS certificates.
• With AWS Certificate Manager, organizations can quickly request a
certificate, deploy it on AWS resources such as Elastic Load Balancing
or Amazon CloudFront distributions, and let AWS Certificate Manager
handle certificate renewals.

AWS Web Application Firewall (WAF):
• AWS Web Application Firewall (WAF) helps protect web applications
from common attacks and exploits that could affect application
availability, compromise security, or consume excessive resources.
• AWS WAF gives organizations control over which traffic to allow or
block to their web applications by defining customizable web security
rules.

Application Services
AWS provides a variety of managed services to use with applications.
The following section explores the application services at a high level.

Amazon API Gateway:
• Amazon API Gateway is a fully managed service that makes it easy for
developers to create, publish, maintain, monitor, and secure APIs at any
scale.
• Organizations can create an API that acts as a “front door” for applications
to access data, business logic, or functionality from back-end services, such
as workloads running on Amazon EC2, code running on AWS Lambda, or
any web application.
• Amazon API Gateway handles all the tasks involved in accepting and
processing up to hundreds of thousands of concurrent API calls, including
traffic management, authorization and access control, monitoring, and
API version management.

Amazon Elastic Transcoder:
• Amazon Elastic Transcoder is media transcoding in the cloud.
• It is designed to be a highly scalable and cost-effective way for
developers and businesses to convert (or transcode) media files from
their source formats into versions that will play back on devices like
smartphones, tablets, and PCs.

Amazon Simple Notification Service (Amazon
SNS):
• Amazon Simple Notification Service (Amazon SNS) is a web service that
coordinates and manages the delivery or sending of messages to
recipients. In Amazon SNS, there are two types of clients—publishers and
subscribers—also referred to as producers and consumers.
• Publishers communicate asynchronously with subscribers by producing
and sending a message to a topic, which is a logical access point and
communication channel.
• Subscribers consume or receive the message or notification over one of the
supported protocols when they are subscribed to the topic.

Amazon Simple Email Service (Amazon SES):
• Amazon Simple Email Service (Amazon SES) is a cost-effective email
service that organizations can use to send transactional email,
marketing messages, or any other type of content to their customers.
• Amazon SES can also be used to receive messages and deliver them to
an Amazon S3 bucket, call custom code via an AWS Lambda
function, or publish notifications to Amazon SNS.

Amazon Simple Workflow Service (Amazon
SWF):
• Amazon Simple Workflow Service (Amazon SWF) helps developers build,
run, and scale background jobs that have parallel or sequential steps.
• Amazon SWF can be thought of as a fully managed state tracker and task
coordinator on the cloud.
• In common architectural patterns, if your application’s steps take more
than 500 milliseconds to complete, it is vitally important to track the state
of processing and to provide the ability to recover or retry if a task fails.
Amazon SWF helps organizations achieve this reliability.

Amazon Simple Queue Service (Amazon SQS):
• Amazon Simple Queue Service (Amazon SQS) is a fast, reliable,
scalable, fully managed message queuing service.
• Amazon SQS makes it simple and cost effective to decouple the
components of a cloud application.
• With Amazon SQS, organizations can transmit any volume of data, at
any level of throughput, without losing messages or requiring other
services to be always available.

Appendix
Amazon home page:
https://aws.amazon.com/
Details of AWS free tier:
https://aws.amazon.com/free/
Create an AWS account:
https://portal.aws.amazon.com/billing/signup?redirect_url=https%3A%2F%2Faws.amazon.com%2Fregistration-confirmation#/start
All the documents:
https://aws.amazon.com/getting-started/documentation/
AWS Java SDK:
https://docs.aws.amazon.com/sdk-for-java/v2/developer-guide/aws-sdk-java-dg.pdf
Create EC2:
https://aws.amazon.com/getting-started/tutorials/launch-a-virtual-machine/

AWS Console
Create Free Account

Give your registered
email ID.

AWS Dashboard –
Logged in view.

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