AWS Cloud Practitioner — compute, networking, storage, security and exam prep — written by Aivasu Tech Institute's mentors. Free to read, structured to actually help you learn.
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- Cloud skills are in high demand across all industries
AWS (Amazon Web Services) is the world's most widely adopted cloud computing platform, providing online access to computing resources, storage, databases, and o
AWS offers a Certification Program for AWS Cloud Practitioner.
AWS offers a Free Tier with limited usage of services at no cost, letting you explore and experiment.
Cloud computing is the on-demand delivery of IT resources over the internet with pay-as-you-go pricing.
Cloud computing offers benefits like cost savings, security, scalability, and flexibility.
When you use AWS, your applications run on physical hardware located in data centers around the world. Understanding how this infrastructure is organized helps
Compute is one of AWS's core service categories. It provides the processing power to run your applications.
EC2 offers different instance types optimized for different use cases. Each provides a specific combination of CPU, memory, storage, and networking.
EC2 uses a pay-as-you-go model. You only pay for the compute time you use and there are several pricing options to optimize costs.
Scaling means adjusting resources to match the current demand. A well-designed architecture handles traffic changes while you only pay for what you need.
When servers receive more requests than they can handle, it can cause timeouts and outages. EC2 Auto Scaling automatically adds or removes instances to match de
Elastic Load Balancing (ELB) distributes incoming traffic across multiple EC2 instances. It acts as a single point of contact, spreading requests evenly so no s
There are two main approaches to connecting components in an application architecture:
EventBridge is a serverless service that connects application components using events. It routes events from custom apps, AWS services, and third-party software
Amazon Simple Notification Service (SNS) is a fully managed messaging service for sending messages to multiple recipients (subscribers). It decouples distribute
Amazon Simple Queue Service (SQS) is a message queuing service for communicating between software components. It sends, stores, and receives messages at any sca
AWS offers three main messaging services, each designed for different use cases:
With serverless computing, you run applications without managing infrastructure. You focus on code while AWS handles servers, scaling, and maintenance.
AWS Lambda is a serverless compute service that runs code in response to events. No servers to manage, automatic scaling, and you pay only for compute time used
A container packages your application with everything it needs to run. Multiple containers can share the same server's operating system while keeping their appl
Amazon Elastic Container Service (ECS) is a container orchestration service for deploying, scaling, and managing containerized applications on AWS.
Amazon Elastic Kubernetes Service (EKS) is a fully managed service for running Kubernetes on AWS. It simplifies deploying, managing, and scaling containerized a
AWS Fargate is a serverless compute engine for containers. No servers to provision or manage. Fargate handles the infrastructure so you can focus on developing
Other than EC2, Lambda, and containers, AWS offers purpose-built compute services for specific needs: web application deployment, batch workloads, simple virtua
Introduction to AWS Global Infrastructure
A Region is a geographic area containing AWS data centers. AWS has Regions across the globe, letting you choose where to run your applications and store your da
An Availability Zone (AZ) is one or more data centers within a Region, each with independent power, networking, and connectivity. Every Region has at least thre
AWS Edge Locations are strategically placed sites around the world that cache content to deliver data with lower latency. They are smaller facilities outside of
Provisioning means setting up and configuring the AWS services your application needs. There are three main ways to interact with AWS: the Management Console, t
In addition to manual provisioning, AWS offers two managed tools that simplify deployment: AWS Elastic Beanstalk and AWS CloudFormation.
Elastic Beanstalk is a web infrastructure management service that handles deployment and scaling for web applications. It automatically manages setup, configura
CloudFormation is an Infrastructure as Code (IaC) service that automates resource provisioning. You define your AWS resources in a template file, and CloudForma
Networking refers to interconnected devices that exchange data and resources. In AWS, networking consists of the infrastructure and services that work together
AWS provides several ways to connect to your cloud resources, from public internet access to dedicated private connections.
Subnets let you organize resources within a VPC, while access control lists and security groups control what traffic can reach them.
AWS provides services to route users to your applications quickly and reliably, regardless of where they are in the world.
AWS enables you to build applications that span multiple regions and data centers. Here are two common global architecture patterns:
AWS provides multiple storage options to meet different needs: block storage for EC2 instances, object storage for files and media, and file storage for shared
An Instance Store is block-level storage physically attached to the EC2 instance host computer. Data persists during reboots but is lost when the instance is st
Amazon Elastic Block Store (EBS) provides persistent block-level storage volumes for EC2 instances. Unlike instance stores, EBS data persists even when the inst
Amazon S3 (Simple Storage Service) is a fully managed object storage service with 99.999999999% durability. It can store any type of file up to 5 TB per object,
Amazon EFS (Elastic File System) is a fully managed, scalable file storage service using the NFS protocol. It automatically scales to petabytes and allows multi
AWS offers different storage types for different needs: block storage (EBS) for EC2 instances, object storage (S3) for files and media, and file storage (EFS) f
AWS offers database services for different needs: relational databases for structured data, NoSQL for flexible schemas, and specialized services for analytics a
Amazon RDS (Relational Database Service) is a managed service for relational databases that use SQL. RDS handles backups, patching, and hardware provisioning au
DynamoDB is a fully managed NoSQL database for key-value and document data. NoSQL databases use flexible schemas where each item has a key and attributes, but u
RDS and DynamoDB serve different needs. RDS is for relational data with complex queries. DynamoDB is for simple key-value lookups at massive scale.
Amazon Redshift is a fully managed data warehouse service for big data analytics. It can analyze petabytes of data from multiple sources using SQL queries, idea
AWS Database Migration Service moves data from a source database to a target database. Your source database remains operational during migration, minimizing dow
AWS offers specialized database services for different use cases other than RDS and DynamoDB, including document databases, graph databases, ledger databases, a
Artificial Intelligence (AI) enables computers to perform tasks that typically require human intelligence, while Machine Learning (ML) trains systems to learn f
AWS provides AI/ML capabilities at different levels of complexity, allowing you to choose the right approach based on your expertise and requirements.
AWS offers AI/ML a large number of services across three tiers. Here's a breakdown of the key services available at each level.
Generative AI creates new content such as text, images, videos, and music. It's powered by large ML models called foundation models (FMs) that are pre-trained o
AWS provides several services for building and deploying generative AI applications, from pre-built models to fully managed foundation model access.
Data Analytics is the process of extracting insights from data. AI/ML and data analytics both depend on clean, organized data. This section covers data pipeline
AWS provides services for each stage of data pipeline: ingestion, storage, cataloging, processing, and analysis. These services integrate together to build comp
Building and maintaining a secure cloud environment requires protecting data, networks, and applications from threats. Security in the cloud is a shared respons
The shared responsibility model divides security duties between AWS and you (the customer). AWS is responsible for security of the cloud, while you are responsi
What is AWS Identity and Access Management (IAM)?
Network and application protection is vital for a secure AWS environment. Attackers can overwhelm your applications with excessive traffic, denying service to l
Encryption protects data by making it unreadable without a key. AWS provides encryption for data at rest (stored in databases, S3) and in transit (moving betwee
Detection finds security threats. Response is how you investigate and fix them. AWS provides integrated services that find vulnerabilities, detect threats, inve
Security is just the first step. You also need to monitor resources, verify everything works correctly, and follow regulations. AWS provides tools to detect pro
Monitoring is the continuous process of collecting and tracking the health and performance of your AWS infrastructure, services, and applications. The goal is t
CloudWatch monitors your AWS resources and applications in real time, providing visibility into resource utilization, application performance, and operational h
CloudTrail tracks user activity and API usage across AWS, on-premises, and other cloud providers. It provides a detailed history of API calls so you can track c
Compliance ensures your cloud resources and data adhere to regulations, industry standards, and internal policies. AWS helps by inheriting security controls, pr
Most companies require specific configuration guidelines for AWS resources. Auditing helps you assess and verify that your resources meet those rules and comply
As companies grow, managing multiple AWS accounts becomes challenging. AWS Organizations helps you centrally manage and govern your environment, automate accoun
As organizations scale, governing AWS accounts, services, and software licenses becomes challenging. AWS provides services to help enforce governance rules and
AWS Health is the go-to data source for events and changes affecting the health of your AWS Cloud resources. It notifies you about service events, planned chang
Optimizing large-scale cloud deployments is an ongoing process. Trusted Advisor continuously evaluates your AWS environment using best practice checks across fi
When using AWS, you'll want to know how much you'll pay and where to get help when you need it. This section covers pricing models, billing tools, support optio
The AWS Free Tier lets you try services for free for the specified period.
AWS offers customers a pay-as-you-go approach for pricing for the vast majority of cloud services.
AWS Pricing and Billing Services Overview
AWS offers a range of support plans tailored to meet the needs of different customers, from those just getting started to large enterprises with complex require
AWS provides resources to help you find software solutions and professional expertise. The AWS Marketplace offers a digital catalog of software, while the AWS P
Cost optimization involves continuously refining your AWS environment to reduce spending while maintaining performance. This includes rightsizing resources, usi
Cloud migration is the process of moving your organization's digital assets, IT resources, applications, and databases from on-premises infrastructure to the AW
What is the AWS Cloud Adoption Framework (CAF)?
When a company migrates to the AWS Cloud, they have many options. There are seven migration strategies to help them reach their goals, also known as the seven R
No matter where you are in the migration process, AWS provides services and resources to support your journey. These services align with the three migration pha
Migrating your database to the cloud provides an opportunity to redesign and improve your database architecture. You might also consider migrating to an AWS man
Beyond database migrations with AWS Database Migration Service (AWS DMS), several AWS services help transfer other types of data and files to the cloud over the
Online migrations work for most customers, but some need to transfer data offline. This includes situations where bandwidth is limited, remote locations lack in
Building reliable, secure, and efficient cloud applications requires more than just knowing AWS services. AWS provides the Well-Architected Framework to help yo
The Well-Architected Framework helps you design cloud solutions that are optimized, not just functional. It provides a structured approach to building secure, h
Beyond core infrastructure, AWS offers specialized services for specific use cases: development tools, business applications, end-user computing, and IoT.
Companies combine specialized AWS services to meet specific business needs. The following examples show how to combine services to solve common business problem
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