Add content for AWS roadmap

src/data/roadmaps/aws/content/100-introduction/100-cloud-computing.md

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-# Cloud computing
+# What is Cloud Computing?
+
+Cloud Computing refers to the delivery of computing services over the internet instead of using local servers. It offers reliable, scalable, and inexpensive cloud computing services which include data storage, databases, applications, analytics, machine learning, and even setting up virtual servers. The biggest names providing cloud computing services are Amazon Web Services (AWS), Microsoft Azure, Google Cloud, and others. The main selling point is that you only pay for the services you use, helping you manage your expenses more effectively.

src/data/roadmaps/aws/content/100-introduction/101-iaas-paas-saas.md

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-# Iaas paas saas
+# IaaS vs PaaS vs SaaS
+
+"IaaS, PaaS, and SaaS are three types of cloud service models. **IaaS** or Infrastructure as a Service provides users with a resource-based service via virtualization technology, offering computing infrastructure, physical or (more often) virtual machines and other resources. **PaaS** or Platform as a Service provides runtime environments for developing, testing, and managing applications, it is utilized for software development and offers a platform to developers to build applications and services over the internet. **SaaS** or Software as a Service provides on-demand software accessed via the internet, it delivers a complete software solution which you purchase on a pay-as-you-go basis from a cloud service provider."

src/data/roadmaps/aws/content/100-introduction/102-public-private-hybrid.md

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-# Public private hybrid
+# Public vs Private vs Hybrid Cloud
+
+Amazon Web Services (AWS) offers various cloud-based deployment models to cater to varying business needs, including Public, Private, and Hybrid clouds. A **Public Cloud** is a model where the service provider offers resources, such as applications and storage, available to the general public over the internet. Resources may be free, or sold on a pay-per-usage model. On the other hand, a **Private Cloud** is a type of cloud computing that delivers similar advantages to public cloud, including scalability and self-service, but through a proprietary architecture dedicated to a single organization. Unlike public clouds, which deliver services to multiple organizations, a private cloud is dedicated to the needs and goals of a single entity. Lastly, a **Hybrid Cloud** is a solution that combines a private cloud with one or more public cloud services, with proprietary software enabling communication between each distinct service.

src/data/roadmaps/aws/content/100-introduction/103-aws/100-global-infra.md

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-# Global infra
+# AWS Global Infrastructure
+
+AWS Global Infrastructure refers to the layout of AWS regions and availability zones around the world. A region is a geographical area, each consisting of two or more availability zones (AZs) which are engineered to be isolated from failures in other AZs. AZs provide inexpensive, low-latency network connectivity to other AZs in the same region. In addition to the regions and AZs, AWS also includes edge locations for content delivery and regional edge caches, enhancing user experience by reducing latency. AWS currently operates in many geographic regions around the world.

src/data/roadmaps/aws/content/100-introduction/103-aws/101-shared-respons.md

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-# Shared respons
+# Shared Responsibility Model
+
+In Amazon Web Services (AWS), the concept of 'Shared Responsibility' pertains to the distribution of security and compliance responsibilities between AWS and the user/client. Under this model, AWS is responsible for the security "of" the cloud — including the infrastructure, hardware, software, networking, and facilities that run AWS cloud services. On the other hand, the user is responsible for security "in" the cloud — this includes managing and configuring the customer-controlled services, protecting account credentials, and securing customer data. This shared model aims to lessen operational burden for users and provide flexible security controls.

src/data/roadmaps/aws/content/100-introduction/103-aws/102-well-architected.md

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-# Well architected
+# Well Architected Framework
+
+AWS Well-Architected Framework is a set of strategic guidelines provided by Amazon Web Services. It is designed to provide high-performing and resilient systems while maintaining cost efficiency. The framework divides the architectural best practices across five pillars which include operational excellence, security, reliability, performance efficiency, and cost optimization. With this framework, you can assess and improve your cloud-based architectures and applications by leveraging AWS technologies.

src/data/roadmaps/aws/content/100-introduction/103-aws/index.md

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-# Aws
+# Introduction to AWS
+
+AWS (Amazon Web Services) offers a broad set of global cloud-based products including compute, storage, databases, analytics, networking, mobile, developer tools, management tools, IoT, security, and enterprise applications: on-demand, available in seconds, with pay-as-you-go pricing. From data warehousing to deployment tools, directories to content delivery, over 200 AWS services are available. New services can be provisioned quickly, without the upfront fixed expense. This allows enterprises, start-ups, small and medium-sized businesses, and customers in the public sector to access the building blocks they need to respond quickly to changing business requirements. This whitepaper provides you with an overview of the benefits of the AWS Cloud and introduces you to the services that make up the platform.
+
+Learn more from the following links:
+
+- [AWS Documentation](https://docs.aws.amazon.com/)
+- [Introduction of AWS](https://docs.aws.amazon.com/whitepapers/latest/aws-overview/introduction.html)
+- [AWS Tutorial for Beginners](https://www.youtube.com/watch?v=zA8guDqfv40)

src/data/roadmaps/aws/content/100-introduction/index.md

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-# Introduction
+# Introduction
+
+AWS (Amazon Web Services) offers a broad set of global cloud-based products including compute, storage, databases, analytics, networking, mobile, developer tools, management tools, IoT, security, and enterprise applications: on-demand, available in seconds, with pay-as-you-go pricing. From data warehousing to deployment tools, directories to content delivery, over 200 AWS services are available. New services can be provisioned quickly, without the upfront fixed expense. This allows enterprises, start-ups, small and medium-sized businesses, and customers in the public sector to access the building blocks they need to respond quickly to changing business requirements. This whitepaper provides you with an overview of the benefits of the AWS Cloud and introduces you to the services that make up the platform.
+
+Learn more from the following links:
+
+- [AWS Documentation](https://docs.aws.amazon.com/)
+- [Introduction of AWS](https://docs.aws.amazon.com/whitepapers/latest/aws-overview/introduction.html)
+- [AWS Tutorial for Beginners](https://www.youtube.com/watch?v=zA8guDqfv40)

src/data/roadmaps/aws/content/101-ec2/100-instance-types.md

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-# Instance types
+# Instance Types
+
+AWS EC2 instances come in a variety of types optimized to fit different use cases. They are grouped into categories depending on their performance capacity and pricing structure. There are five categories of instance types including General Purpose, Compute Optimized, Memory Optimized, Storage Optimized, and Accelerated Computing instances. Each category is suited best for specific workloads and they consist of different instance types each given a specific name, for example, 't2.micro'. Each instance type has a specific amount of CPU, memory, storage, and network capacity. Understanding the workloads of your applications can help you determine which instance type would be best suited to your needs.

src/data/roadmaps/aws/content/101-ec2/101-cpu-credits.md

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-# Cpu credits
+# CPU Credits
+
+AWS EC2 instances earn CPU Credits when they are idle and consume CPU credits when they are active. A CPU credit provides the performance of a full CPU core for one minute. T2 and T3 instances accrue CPU Credits and use them to burst beyond their baseline performance. For example, a t2.micro instance receives credits continuously at a rate of 6 CPU Credits per hour. The credit balance of an instance can be saved for up to 7 days. When the instance does not have any CPU credits, it performs at the baseline. It's important to note that CPU credit pricing is different and additional to the instance pricing. AWS also offers Unlimited mode for instances that need to burst beyond the baseline performance for extended periods.

src/data/roadmaps/aws/content/101-ec2/102-storage-volume.md

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-# Storage volume
+# Storage / Volumes
+
+In AWS, an `Amazon EBS` (Elastic Block Store) is the storage volume used by EC2 (Elastic Compute Cloud) instances. It is designed for data durability, and Amazon EBS volumes automatically replicate within their Availability Zone to prevent data loss due to failure of any individual component. EBS volumes are attached to an EC2 instance, and appear as a network drive that you can mount and format using the file system of your choice. You can use Amazon EBS as the primary storage for data that requires frequent updates, such as a system drive for an instance or storage for a database application.

src/data/roadmaps/aws/content/101-ec2/103-keypairs.md

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-# Keypairs
+# Keypairs
+
+Key pairs are part of Amazon EC2 and are used to securely log into your instances. A key pair consists of a public key and a private key. Amazon EC2 generates the key pair and gives you the private key, whereas the public key is stored with AWS. When you launch an EC2 instance, you specify the name of the key pair. You can then use the private key to securely connect to your instance. Key pairs are region-specific, meaning you need to create separate key pairs for each region in which you operate your instances.

src/data/roadmaps/aws/content/101-ec2/104-elastic-ip.md

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-# Elastic ip
+# Elastic IP
+
+"Elastic IP" in AWS EC2 is a static IPv4 address designed for dynamic cloud computing. An Elastic IP address is associated with your AWS account not a particular instance, and you control that address until you choose to explicitly release it. Unlike traditional static IP addresses, however, Elastic IP addresses allow you to mask the failure of an instance or software by rapidly remapping the address to another instance in your account.

src/data/roadmaps/aws/content/101-ec2/105-user-data-scripts.md

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-# User data scripts
+# User Data Scripts
+
+"User Data Scripts" in EC2 instances are used to perform common automated configuration tasks and even run scripts after the instance starts. These scripts run as the root user, and can be used to install software or download files from an S3 bucket. You can pass up to 16 KB of data to an instance, either as plain text or base64-encoded. The User Data script is executed only one time when the instance is first launched. If you stop and start the instance, the script does not run again. However, it will run on every boot if the instance reboots.

src/data/roadmaps/aws/content/101-ec2/106-purchasing-options.md

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-# Purchasing options
+# Purchasing Options
+
+Amazon EC2 provides several purchasing options to fit different workload needs. The **On-Demand** option allows clients to pay for compute capacity per hour with no long-term commitments. **Reserved Instances** provide a significant discount compared to On-Demand pricing and are ideal for applications required steady state usage. **Spot Instances** allow clients to bid for unused Amazon EC2 capacity and can provide significant savings if flexibility is possible in starting and stopping times. **Dedicated Hosts** are physical EC2 servers dedicated to specific clients, suitable for regulatory requirements and licenses which do not support multi-tenant virtualization, and **Savings Plans** offer reduced rates for committing to a consistent amount of usage for 1 or 3 years.

src/data/roadmaps/aws/content/101-ec2/index.md

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-# Ec2
+# EC2
+
+Amazon Elastic Compute Cloud (EC2) is a web service that provides secure, resizable compute capacity in the cloud. It is designed to make web-scale cloud computing easier for developers. EC2’s simple web service interface allows you to obtain and configure capacity with minimal friction. EC2 enables you to scale your compute capacity, develop and deploy applications faster, and run applications on AWS's reliable computing environment. You have the control of your computing resources and can access various configurations of CPU, Memory, Storage, and Networking capacity for your instances.

src/data/roadmaps/aws/content/102-vpc/100-cidr-blocks.md

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-# Cidr blocks
+# CIDR Blocks
+
+"CIDR" stands for Classless Inter-Domain Routing. In AWS VPC, a CIDR block is the IP address block from which private IPv4 addresses and public IPv4 addresses are allocated when you create a VPC. The CIDR block can range from /28 (16 IP addresses) to /16 (65,536 IP addresses). It represents a network segment and is associated with a network boundary. Upon creation, you cannot change the CIDR block of your VPC, but you can add additional CIDR blocks to it if needed. A VPC's CIDR block should not overlap with any of the existing network's CIDR blocks.

src/data/roadmaps/aws/content/102-vpc/101-subnets/100-private.md

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-# Private
+# Private Subnet
+
+Private subnets in AWS are isolated network segments within your VPC that do not have direct access to the internet. You can use private subnets to run services and applications that should not be directly accessible from the outside world, but still need to communicate with other resources within your VPC. Any instances launched in a private subnet cannot directly send traffic to the internet without routing through a NAT device.

src/data/roadmaps/aws/content/102-vpc/101-subnets/101-public.md

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-# Public
+# Public Subnet
+
+In AWS, a subnet that's designated as `public` is one that has direct access to the Internet. Each subnet that you create runs on its own portion of the AWS network, and you can consider them as logically isolated sections. When a subnet is designated as public, it means an Internet Gateway is attached to it and thus instances within this subnet can easily communicate with the outside net. Each instance that you launch into a public subnet is automatically assigned a private IPv4 address and a public IPv4 address. These addresses don't change and remain with the instance, until it's stopped, terminated or replaced with a different address. This setup allows instances in the public subnet to communicate directly with the internet and other AWS services.

src/data/roadmaps/aws/content/102-vpc/101-subnets/index.md

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-# Subnets
+# Subnets
+
+Subnets or subnetworks in Amazon VPC (Virtual Private Cloud) are divisions of a VPC's IP address range. You can launch Amazon Elastic Compute Cloud (Amazon EC2) instances into a selected subnet. When you create a subnet, you specify the CIDR block for the subnet, which is a subset of the VPC CIDR block. Each subnet must be associated with a route table, which controls the traffic flow between the subnets. There are two types of subnets: public and private. A public subnet is one in which the associated route table directs the subnet to the Internet Gateway (IGW) of the VPC. A private subnet does not have a route to the IGW and hence has no direct route to the internet.

src/data/roadmaps/aws/content/102-vpc/102-route-tables.md

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-# Route tables
+# Route Tables
+
+A _Route Table_ in AWS VPC is a set of rules, called routes, that are used to determine where network traffic is directed. Each subnet in your VPC must be associated with a route table, which controls the traffic for the subnet. By default, your VPC has a main route table that you can modify. You can also create additional custom route tables for your VPC. A subnet can only be associated with one route table at a time, but you can change the association.

src/data/roadmaps/aws/content/102-vpc/103-security-groups.md

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-# Security groups
+# Security Groups
+
+Security Groups in AWS act as a virtual firewall for your instance to control inbound and outbound traffic. When you launch an instance in a VPC, you can assign up to five security groups to the instance. Security Groups are stateful — if you send a request from your instance, the response traffic for that request is allowed to flow in regardless of inbound security group rules. You can specify allow rules, but not deny rules. You can specify separate rules for inbound and outbound traffic. Therefore, if you need to allow specific communication between your instances, you'll need to configure both outbound rules for the sender security group and inbound rules for the receiver security group.

src/data/roadmaps/aws/content/102-vpc/104-internet-gateway.md

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-# Internet gateway
+# Internet Gateway
+
+An **Internet Gateway** is a redundant, horizontally scalable component in AWS that performs bi-directional routing between a VPC and the Internet. It serves two purposes; routing outbound traffic from the VPC to the internet (NAT), and routing inbound traffic from the Internet to the VPC. It's automatically highly available and provides bandwidth and redundancy across all AWS Regions. It becomes associated with a VPC upon creation, and cannot be detached or attached to another VPC once created. Security to and from the Internet Gateway can be controlled using route tables and security groups or network ACLs.

src/data/roadmaps/aws/content/102-vpc/105-nat-gateway.md

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-# Nat gateway
+# NAT Gateway
+
+AWS NAT Gateway is a managed service that provides source Network Address Translation (NAT) for instances in a private subnet so they can access the internet securely. It's designed to operate automatically, handling bandwidth scaling, failover, and managing carrier IP addresses. With NAT Gateway, instances within a VPC can access the internet for software updates, patches, etc, but inbound traffic from the internet is prevented, helping maintain the security and privacy of the private subnet. NAT Gateway is redundant within the Availability Zone, providing high availability. It supports TCP, UDP, and ICMP protocols, as well as Port Address Translation (PAT).

src/data/roadmaps/aws/content/102-vpc/index.md

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-# Vpc
+# VPC
+
+Amazon VPC (Virtual Private Cloud) is a service that lets you launch AWS resources in a logically isolated virtual network that you define. It provides advanced security features such as security groups and network access control lists to enable inbound and outbound filtering at the instance and subnet level. Additionally, you can create a Hardware Virtual Private Network (VPN) connection between your corporate datacenter and your VPC to leverage the AWS cloud as an extension of your corporate datacenter.

src/data/roadmaps/aws/content/103-iam/100-policies/100-identity-based.md

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-# Identity based
+# Identity-Based
+
+"Identity-based policies" are one of the types of policies you can create in AWS (Amazon Web Services). They are attached directly to an identity (like an IAM user, group, or role) and control what actions that identity can perform, on which resources, and under what conditions. There are two types - inline and managed. Inline policies are created and managed individually, while managed policies are standalone policies that you can attach to multiple identities. This offers a flexible framework for managing permissions across your AWS resources. These policies are written in a language called JSON (JavaScript Object Notation).