AWS Crash Course | Job Interview| World's 1st QnA Style 2026

Explore how servers share information with clients, acting as the backbone of networks, and discover AWS's global infrastructure with regions and availability zones delivering low latency and high reliability.

Understand what a server means in the AWS context. Learn the cloud benefits like on-demand, pay-as-you-go, flexibility, scalability, and global accessibility with security.

Compare public, private, and hybrid clouds, explain their use cases, and summarize how security, cost, and scalability influence deployment choices.

Explore the differences between infrastructure as a service, platform as a service, and software as a service, including responsibilities and examples like EC2, Elastic Beanstalk, and Google Drive.

Explore AWS global infrastructure, including regions, availability zones, and edge locations such as CloudFront and Route 53, and learn how isolation enables redundancy, fault tolerance, and low-latency delivery.

Learn how a hypervisor, the virtual machine monitor, sits between hardware and virtual machines to enable multiple virtual machines on one physical host and allocate CPU, memory, and storage.

Explore AWS concepts of high availability, fault tolerance, and disaster recovery, including regions, availability zones, auto scaling, and backups.

Explore the difference between regional and global AWS services, and how regional services like EC2 differ from global ones like IAM. Learn examples and region-specific usage across AWS.

Explore the AWS UI tour to navigate the console, view services, databases, and account details, customize widgets, switch regions and appearance, and access support, docs, notifications, Cloud Shell, and EC2.

Discover how AWS budget acts as a cost management tool to set custom cost and usage budgets, thresholds, and alerts, with email notifications and detailed spend tracking.

Analyze AWS billing and cost management to identify which services contribute to the cost and how usage drives charges, using Cost Explorer and reports to forecast and optimize spending.

Explore AWS service quotas and payments, learn how limits cap resources, view and adjust quotas via the AWS dashboard and explorer, and manage payments and funds.

Cost allocation tags are metadata labels you assign to AWS resources to categorize and track the cost, enabling tagging, tracking costs, and reporting by projects, departments, or business units.

Explore identity and access management (IAM) and how it controls who can access AWS resources, with users, groups, roles, and policies enabling fine-grained, secure permissions.

Explore the difference between IAM users and IAM roles, learn how long term vs temporary credentials enable secure access to AWS services like EC2 and S3.

Compare root user and IAM user in AWS: the root user has full access, while IAM users have controlled, policy-based access created by the root user.

Understand IAM policies in AWS, including built-in and custom policies, grant or deny permissions to users, groups, and roles using JSON statements, actions, resources, and conditions.

Explore why attaching policies to IAM users matters, granting and tracking permissions with attach policies, IAM permissions, and access advisor, illustrated through S3, EC2, and test users.

Attach iam roles to aws services and users, using Lambda, EC2, and S3, by creating roles, assigning execution roles, and using sts assume role with inline policies.

Discover how IAM permission boundaries limit a user or role by defining the maximum actions, resources, and conditions for EC2 access, such as start and stop only.

Learn how multi-factor authentication adds a security layer to AWS by requiring a time-based code from an authenticator app, SMS, or hardware token, and how to enable MFA in IAM.

Configure a password policy in AWS IAM by choosing default or custom options and setting length, strength, expiration, and reuse rules.

Understand IAM access keys, including the access key ID and secret key, and learn to generate and configure them for AWS CLI, SDKs, and HTTP APIs.

Explore auditing AWS access with the IAM policy simulator to test permissions and simulate policy effects, and use the credentials report to review user status and credentials.

Explore identity providers in IAM, including SAML 2.0 and OpenID Connect, and learn how IAM organizations enable centralized, cross-account management with consolidated billing and service control policies.

Learn to create an AWS organization, invite and manage accounts, build an organizational unit hierarchy, and enforce governance with service control policies.

Manage access to multiple AWS accounts and applications through a centralized identity center, enabling single sign-on, MFA security, and streamlined user and permission set management.

Learn how to enable IAM Identity Center in a single AWS account, remove existing AWS organizations, and create or manage organizations directly from the Identity Center.

Explore how to integrate Microsoft Active Directory with AWS using AWS directory services, including managed Active Directory, AD Connector, and Simple AD, for seamless SSO and Windows workloads.

Apply MFA and passwords; grant least privilege via IAM roles; rotate keys; enable logging with CloudTrail, AWS Config, and CloudWatch; enforce permission boundaries and SCP with AWS Organizations; educate users.

Explore how AWS EC2 provides elastic compute cloud virtual servers you customize by region, architecture, CPU, memory, and storage, then launch instances with OS options, key pairs, and security settings.

Review the EC2 family by outlining the six instance classes—general purpose, compute, memory, storage, accelerated, and HPC—and their example series such as m, t, c, r, ii, p, and g.

Explore how security groups act as virtual firewalls for EC2 instances, using stateful inbound rules to control traffic, with outbound traffic allowed by default.

Launch an EC2 server by selecting an AMI, the Amazon Linux image, and a key pair, then set the instance type, security group, and 8 gb storage before launching.

Troubleshoot security group issues by verifying inbound and outbound rules, port configurations (ssh 22, http 80), and correct source cidr settings to connect to an EC2 instance.

Explore the four EC2 purchasing options—on-demand, reserved, spot, and dedicated—highlighting pricing, flexibility, and capacity guarantees for cost optimization.

Launch an EC2 spot instance in the console, compare it to a standard instance, and configure pricing with no maximum price or a cap plus single use or persistent usage.

Learn the three ip types: public, private, and elastic ip, and how elastic ip fixes a public address for failover.

Learn how AWS key pairs secure EC2 access via SSH, with public keys stored by AWS and private keys kept by users, plus RSA, PEM, and PPK formats.

Attach IAM roles to EC2 instances to securely access AWS services without long-term credentials. Enforce least privilege and centralized management for S3, DynamoDB, AWS Systems Manager, and CloudWatch.

Explore placement groups in EC2 to reduce latency and boost performance by grouping instances in an availability zone; compare cluster, partition, and spread strategies for high availability and durability.

Learn how to use user data in EC2 to automate software installation and initialization scripts at launch, including git installation and starting a web app.

Explore how AWS EC2 metadata reveals instance details like id, type, IP addresses, and security groups, and access it via the metadata service with required or optional forms and tokens.

Explore how to change the EC2 instance type by stopping the instance and using modify instance type to scale between T2 micro and medium, migrating to current generation with IPv6.

Explore EC2 real-time scenarios: stopping incurs no instance charges but bills EBS volumes, and hibernation saves RAM for faster startup. Troubleshoot connectivity with credentials, security groups, subnets, and status checks.

Attach multiple elastic network interfaces to a single server to provide primary and secondary private IPs, elastic IPs, and optional public or IPv6 addresses, with secure, scalable network management.

Compare instance storage, an ephemeral, high-performance EC2 volume that disappears when the instance stops or terminates, with EBS volumes, persistent block storage that persists and supports snapshots.

Explains how to increase EBS volume size in AWS for in use and available volumes, clarifying that decreasing size is not supported, with modify volume steps in EC2.

Learn how to attach multiple EBS volumes to a single EC2 instance, with all volumes in the same availability zone, through a practical real-time demo.

Explore AWS EBS volume types: GP2 and GP3 general-purpose SSDs, I1/I2 provisioned IOPS, ST1 throughput HDD, SC1 cold HDD, and magnetic storage, with use cases for performance and cost.

Learn how snapshots freeze an EBS volume state to back up data, enable recovery, and create new volumes, with use in disaster recovery, archiving, and cross-region sharing on EC2.

Create an EBS volume from a snapshot and attach it to a server in a different availability zone to enable cross-AZ data migration.

Learn to share an EBS snapshot across regions for migration by creating a snapshot of an eight GB volume and copying it to us east 2.

Encrypt your EBS volumes with AWS KMS to secure data at rest and in transit. Ensure encryption remains transparent to applications and delivers minimal performance impact.

Master real-time EC2 data recovery by troubleshooting instance status, connecting, rebooting, stopping and starting, and using snapshots and EBS volumes to detach, reattach, and restore data.

Migrate a server across availability zones by stopping instance, snapshotting EBS volume, creating a new volume from the snapshot, and attaching it to a new EC2 in the destination AZ.

Learn to recover from a lost key pair by reattaching the EBS volume to a new instance with a new key pair. Use EBS snapshots as a fallback if needed.

Explore Amazon EFS, a scalable, NFS-based file system for Linux that supports multiple EC2 instances, automatic resizing, and shared access via DNS or IP.

Compare EFS and EBS to explain differences between file system and block storage, focusing on scalability, availability across availability zones, and cost.

Explore AWS EFS storage classes—standard for active data, infrequent access for less-frequently used files, and archive mode for rarely accessed data; learn cost and lifecycle transitions.

Explore real-time scenario of attaching multiple Linux instances (Amazon Linux and Ubuntu) to a single AWS EFS, installing NFS or EFS utils, mounting, and verifying shared file access.

Explore S3, AWS's scalable object storage for storing data from anywhere, organized into buckets of objects, with naming rules and features like versioning, encryption, and disaster recovery.

Enable S3 versioning to keep multiple versions of an object in a bucket, protecting against overwrites and deletions with version IDs and lifecycle-based data retention.

Discover how to host a static website on S3 by creating a bucket, enabling hosting, configuring public access and ACL, uploading files, and testing with index and error pages.

Explore Amazon S3 storage classes and lifecycle rules to automatically transition objects from standard to intelligent tiering, one zone infrequent access, and glacier modes, optimizing costs through defined lifecycle transitions.

Learn how S3 replication supports disaster recovery and low latency through same-region and cross-region replication, with setup steps, versioning, encryption options, and batch replication of existing objects.

Explore S3 batch operations to copy objects, replace tags, modify access control, and invoke lambda across millions of S3 objects with a single job, plus bulk management and tracking.

Understand how bucket policies control access to S3 buckets and objects, including using the policy generator, specifying principals, actions, and ARNs.

Compare S3 and EFS as globally accessible object storage versus scalable NFS-based storage mounted to EC2, and note EBS as high-performance block storage for a single EC2.

Learn how to securely encrypt data in S3, choosing between server-side and client-side encryption, using default encryption or KMS, with key management and compliance benefits.

Learn how MFA delete adds an extra authentication layer to protect S3 data and prevent accidental deletion in versioned buckets, with CLI enablement guidance.

Learn how aws s3 inventory generates a csv file with object details and metadata for auditing, compliance, and simplified data management.

Explore S3 access logs, or server access logging, detailing who accessed what, when, and the outcome. Enable destination buckets for granular, automated logging to support security and monitoring.

S3 event notification enables automatic, event-driven workflows by triggering actions on object creation, deletion, or modification, with destinations like Lambda, SNS, or SQS.

Learn how S3 pre-signed URLs grant temporary, secure access to a specific object in a private bucket without AWS credentials, enabling time-limited, granular sharing for authenticated users.

Explore how to secure data in S3 with server-side encryption, access control, versioning, lifecycle, cross-region replication, logging and monitoring, and public access blocking for robust data protection.

Enable S3 object lock to store objects with a write-once, read-many worm model, preventing deletion or modification for a configurable retention period and ensuring data integrity and ransomware protection.

Compare AWS application load balancer, network load balancer, gateway load balancer, and classic load balancer, detailing their 7th- and 4th-layer operations, content-based routing, and security use cases.

Learn how to create and configure a classic load balancer in AWS EC2, register healthy instances, set listeners and health checks, and observe load distribution across servers.

Explore why health checks are essential for load balancers, monitoring EC2 instances and routing traffic only to healthy ones by checking a health path like index.html to ensure high availability.

Explore cross-zone load balancing to distribute incoming traffic across multiple EC2 availability zones, boosting fault tolerance and reducing downtime by ensuring even load across instances.

Manage graceful termination with connection draining in ELB by completing active requests before deregistering instances, with a default 300-second timeout and configurable settings.

Discover how the AWS application load balancer enables DNS-based, path-based, and host-based routing across EC2, containers, and IP targets, with health checks and secure, scalable traffic management.

Target groups collect resources like EC2 instances, Lambda functions, and IP addresses to receive traffic from application or network load balancers. Configure http/https health checks to register and distribute load.

learn by doing: configure an application load balancer with target groups, launch and register ec2 instances, monitor health checks with cloudwatch, and manage listeners, rules, and security groups.

Learn how sticky sessions, also known as session persistence, use cookies and TTL to route a user to the same target server, ensuring consistent shopping carts and stateful experiences.

Understand the network load balancer, an IP-based, high-throughput AWS service at the transport layer with TCP/UDP support, static IPs, and low latency for gaming and video streaming.

Set up a network load balancer by creating a target group and registering instances, then verify TCP health checks and listener configurations with DNS.

Discover how https on port 443 uses ssl certificates and tls termination at the load balancer to encrypt data in transit, improving security and offloading decryption.

Explore the gateway load balancer, a fully managed AWS service using the Geneve protocol to securely integrate with third-party appliances for firewall, IDS/IPS, deep packet inspection, across multi-region deployments.

Compare application and network load balancers, detailing layer seven versus four, http/https versus tcp/tls, content-based versus ip routing, and use cases from web apps, microservices, gaming, and IoT.

Discover how AWS auto scaling uses launch templates and policies to adjust minimum to maximum instances in an auto scaling group for dynamic load, with CloudWatch monitoring.

Learn three auto scaling policies—dynamic, scheduled, and predictive—using CloudWatch alarms and CPU utilization, with simple, step, and target dynamics, and scheduled or AI-based rules for capacity management.

Demonstrate end-to-end setup of a scheduled autoscaling policy in AWS, from launching a T2 micro server to creating a launch template and an auto scaling group with a scheduled action.

Watch a hands-on demo of auto scaling with a classic load balancer, creating a base template and an auto scaling group, and configuring scheduled and dynamic scaling policies.

Understand the AWS virtual private cloud (VPC) and how to create a logically isolated network. Explore subnets, route tables, internet gateway, net gateway, and security groups for secure deployments.

Relate real-time VPC concepts to a society analogy, linking subnets, internet gateway, public and private subnets, route tables, net connectivity, NACLs, security groups, EC2 instances, and VPC peering.

Create a VPC and more to automatically generate subnets, route tables, internet gateway, and NAT gateways or S3 endpoints, with a preview of the resources.

Create specific VPC components by adding subnets, adjusting CIDR ranges, and configuring route tables to meet your utilization needs in AWS.

Learn how private subnets isolate resources, and how to access them via a bastion host, NAT gateway, VPN, direct connect, or VPC endpoints, using SSH to private instances.

Discover how a NAT gateway lets private subnet instances access the internet for updates and AWS services without inbound connections, and why the managed NAT gateway is recommended.

Compare net gateway and bastion host in a VPC, showing bastion as a jump server for SSH into private instances and net gateway for outbound internet access.

Understand NaCl and security group differences: NaCl guards subnets with allow and deny rules and is stateless, while security groups protect EC2 instances, are stateful, and use only allow rules.

Learn how AWS reserves five IPs per subnet—the network address, VPC router, DNS server, a future-use IP, and the broadcast address—and how this reduces usable IPs from your CIDR block.

VPC flow logs capture IP traffic into and out of your VPC, showing acceptance and rejection for security and performance analysis. Configure destinations like CloudWatch or S3 to store logs.

Learn how VPC peering provides private connectivity between VPCs in the same or different regions for secure communication without the internet, and note transitive connectivity is not supported.

Explore how AWS transit gateway acts as a central hub to connect multiple VPCs and on-premises networks, replacing 1-to-1 VPC peering with scalable, simplified routing.

Learn how to privately connect your VPC to AWS services like S3 and DynamoDB using VPC endpoints, including gateway and interface endpoints via PrivateLink, for internet-free access and improved performance.

Explore AWS Direct Connect, a dedicated end-to-end link between on-prem data centers and AWS that bypasses the internet for high bandwidth, low latency hybrid cloud, data migration, and disaster recovery.