AWS-intro - Notes By ShariqSP

Introduction to Cloud Computing:

Cloud computing revolutionizes the way businesses and individuals access, store, and process data and applications. Rather than relying on physical hardware and infrastructure, cloud computing leverages the internet to deliver on-demand computing resources, allowing for scalability, flexibility, and cost-effectiveness.

Types of Cloud:

Public Cloud: Services are provided over the public internet by third-party providers like Amazon Web Services (AWS), Microsoft Azure, and Google Cloud Platform (GCP).
Private Cloud: Resources are dedicated to a single organization, providing greater control and security. It can be hosted on-premises or by a third-party provider.
Hybrid Cloud: Combines public and private cloud resources, allowing for greater flexibility and scalability.

Cloud Computing Services:

Cloud computing services can be broadly categorized into Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). IaaS provides virtualized computing resources over the internet, including servers, storage, and networking. PaaS offers a platform for developing, deploying, and managing applications without the complexity of infrastructure management. SaaS delivers software applications over the internet on a subscription basis, eliminating the need for local installation and maintenance.

What is AWS?

Amazon Web Services (AWS) is a leading cloud computing platform provided by Amazon. It offers a wide range of services across compute, storage, databases, analytics, machine learning, and more. AWS enables organizations to build, deploy, and scale applications quickly and securely without the upfront investment in physical infrastructure.

Key AWS Services:

Amazon EC2 (Elastic Compute Cloud): Provides resizable compute capacity in the cloud, allowing users to launch virtual servers known as instances. Features include on-demand instances, reserved instances, spot instances, auto-scaling, and integration with Virtual Private Cloud (VPC).
Amazon S3 (Simple Storage Service): Offers scalable object storage for storing and retrieving data. Features include versioning, encryption, lifecycle policies, and cross-region replication.
Amazon VPC (Virtual Private Cloud): Enables users to create isolated virtual networks within the AWS cloud. Features include subnet creation, network ACLs, security groups, and VPN connectivity.
AWS IAM (Identity and Access Management): Manages access to AWS services and resources securely. Features include users, groups, roles, permissions, and multi-factor authentication.
Amazon CloudWatch: Provides monitoring and observability for AWS resources and applications. Features include dashboards, alarms, logging, metrics, and automated actions.
Amazon EBS (Elastic Bean Stack): AWS Elastic Beanstalk is a Platform as a Service (PaaS) offering from Amazon Web Services (AWS) that simplifies the deployment, management, and scaling of web applications and services. With Elastic Beanstalk, developers can quickly deploy applications written in various programming languages (such as Java, .NET, Node.js, Python, Ruby, Go, and Docker) onto AWS infrastructure without worrying about the underlying infrastructure details.
Amazon RDS (Relational Database Service): Simplifies database administration by managing relational databases. Features include automated backups, scaling, monitoring, and multi-AZ deployments.

Conclusion:

AWS offers a comprehensive suite of cloud computing services that empower organizations to innovate, scale, and succeed in today's digital economy. Understanding and leveraging key AWS services like EC2, S3, VPC, IAM, CloudWatch, EBS, and RDS can help businesses drive efficiency, agility, and growth in the cloud.