AWS Cloud Computing

What is Cloud Computing?

Cloud computing is the on-demand delivery of computing services such as servers, storage, databases, networking, software, and analytics over the internet. Instead of owning and maintaining physical hardware, users can access resources from cloud providers and pay only for what they use.

How Does Cloud Computing Work?

Cloud computing relies on remote data centers that store and process data. These centers are managed by cloud service providers like Amazon Web Services (AWS), Microsoft Azure, and Google Cloud.

Step-by-Step Process:

• User Sends a Request – You access an application, website, or storage service.
• Cloud Provider Handles the Request – The cloud provider processes your request using its infrastructure.
• Data Delivered Over the Internet – You receive the requested data or service instantly.

This process eliminates the need for businesses and individuals to maintain expensive IT infrastructure.

Types of Cloud Computing

Cloud computing is divided into three main models based on how services are provided:

1. Infrastructure as a Service (IaaS)

• Provides virtual machines, storage, and networking on demand.
• Users manage applications and operating systems but rely on cloud providers for hardware.
• Examples: AWS EC2, Google Compute Engine, Microsoft Azure Virtual Machines.

2. Platform as a Service (PaaS)

• Provides a development environment with pre-configured tools and frameworks.
• Developers can focus on coding without managing servers or databases.
• Examples: AWS Elastic Beanstalk, Google App Engine, Microsoft Azure App Services.

3. Software as a Service (SaaS)

• Provides ready-to-use applications that run on the cloud.
• Users access these services via a web browser without installing software.
• Examples: Gmail, Dropbox, Zoom, Microsoft Office 365.

AWS Cloud Deployment Models

AWS cloud computing can be deployed in different environments:

1. Public Cloud

• Fully hosted and managed by AWS.
• Shared infrastructure with multiple customers.
• Best for startups, SaaS applications, and e-commerce.

2. Private Cloud (AWS Outposts, VMware Cloud on AWS)

• Dedicated infrastructure for a single organization.
• Higher security and compliance for sensitive data.
• Best for banks, healthcare, and government organizations.

3. Hybrid Cloud (AWS Hybrid Services)

• Combination of public and private clouds.
• Allows businesses to keep sensitive data on-premises while using AWS for scalability.
• Best for enterprises with legacy systems and strict regulations.

AWS Cloud Use Cases

• Hosting Websites & Applications – High-speed hosting for businesses and startups.
• Streaming Media – Fast delivery of videos, games, and audio content.
• Data Backup & Recovery – Secure and scalable data storage solutions.
• Big Data & Analytics – Powerful data processing with AWS Redshift and EMR.
• AI & Machine Learning – Automate business decisions with AI-powered services.
• Financial Services – Secure, compliant cloud solutions for banks and fintech.
• Healthcare & Life Sciences – Data storage, analytics, and AI-driven diagnostics.

Getting Started with AWS Cloud Computing

• Create an AWS Account
• Explore AWS Free Tier – Use free services for 12 months.
• Launch an EC2 Instance – Set up a virtual machine.
• Use Amazon S3 – Store and retrieve files in the cloud.
• Monitor Resources – Track usage and costs with AWS CloudWatch.