AWS Cloud Fundamentals

Amazon Web Services (AWS) is a comprehensive, secure, and scalable cloud computing platform provided by Amazon, offering over 200 fully featured services from data centers globally.

AWS provides benefits like agility, scalability, elasticity, global reach, pay-as-you-go pricing, security, and high reliability through its global infrastructure.

Cloud computing is the on-demand delivery of IT resources over the internet with pay-as-you-go pricing, instead of buying, owning, and maintaining physical data centers and servers.

The models are Infrastructure as a Service (IaaS) for virtualized computing resources, Platform as a Service (PaaS) for development platforms, and Software as a Service (SaaS) for ready-to-use software applications.

An AWS Region is a geographic area consisting of multiple isolated Availability Zones, each with independent power, cooling, and networking to enhance fault tolerance.

An Availability Zone is an isolated location within a Region, comprising one or more data centers with redundant power, networking, and connectivity, designed for high availability.

Edge Locations are endpoints for AWS services like CloudFront and Route 53, used to cache content closer to users for low-latency delivery worldwide.

It includes Regions (54+), Availability Zones (170+), and Edge Locations (400+ globally), enabling low-latency access, data residency, and disaster recovery.

AWS is responsible for the security 'of' the cloud (infrastructure, hardware, software), while customers are responsible for security 'in' the cloud (data, OS, applications, IAM).

An AWS Account is a unique identifier for billing and resource management; multiple accounts can be organized under AWS Organizations for governance.

AWS Organizations helps centrally manage policies across multiple AWS accounts with features like consolidated billing, service control policies (SCPs), and account grouping.

IAM is a service for securely controlling access to AWS resources by creating users, groups, roles, and policies defining permissions.