Demystifying AWS: An Introductory Guide to 4 Key AWS Services
Tags: aws, beginners, cloud
Published: 2024-06-24 11:02:00


Introduction
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If you are thinking about creating a new system or moving your existing systems to the cloud, it is important that you have a good knowledge of the cloud services provided by AWS, as AWS cloud services provide reliable, secure, efficient, and cost-effective systems effectively in the cloud.

This blog post unravels the core concepts of cloud computing, explores the advantages of using AWS, and delves into four of AWS fundamental services. Whether you’re a tech enthusiast or a developer venturing into the cloud realm, this blog post equips you with the knowledge to navigate the exciting world of AWS.

I recently made a [presentation for AWS meetup titled “Introduction to AWS ey Services”](https://www.meetup.com/awsegyptmeetup/events/299997389/). You can check [the event presentation from this link](https://onekc.pro/AWS-ppt-public.html#1). Also, make sure to check this post shortly as I will be providing a video recording of the session to show the detailed steps.

_Note that_ All IP rights to this blog post are reserved. Since I have been facing several content piracy cases lately, this blog post has ONLY been published on [the Software, Architecture, and Cloud blog - SWAC.blog](https://swac.blog) and canonically to [dev.to](https://dev.to/khalidelgazzar) only. If you are reading it elsewhere, then [please let us know](https://swac.blog/contact-us/)


![Old (left) and new (right) AWS logos
](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/8s4yxs1grj687z2vicd2.png)

**Cloud Computing 101**
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Cloud computing refers to the on-demand delivery of IT resources—servers, storage, databases, networking, software, analytics, intelligence, and more—over the internet. Unlike traditional on-premises infrastructure, where you manage physical hardware and software, cloud computing offers a scalable, pay-as-you-go model. This eliminates the upfront costs of hardware and simplifies maintenance, allowing you to focus on your core business activities.

**Why Choose AWS?**
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AWS stands out as the frontrunner in the cloud computing landscape, boasting a vast array of services, global reach, and unparalleled security. With a multitude of regions and availability zones strategically located worldwide, AWS ensures exceptional service uptime and low latency. Additionally, AWS consistently ranks at the forefront of Gartner reports, solidifying its position as a trusted and reliable cloud platform.



![AWS offers a plethora of services (200+ services)](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/2pd4w06sl03schfhcwz1.png)


**Understanding Virtualization and Containerization**
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Virtualization, a foundational concept in cloud computing, enables the creation of multiple virtual machines (VMs) on a single physical server. This allows efficient utilization of hardware resources and facilitates running various operating systems and applications simultaneously. Containerization leverages a more lightweight approach, packaging an application and its dependencies into a container that can be seamlessly deployed across different environments. Containers offer faster startup times and better resource utilization compared to VMs.

**Evolution of Cloud and Hosting**
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Cloud computing has undergone a remarkable transformation, evolving from dedicated servers to the serverless architecture we witness today. Dedicated servers provide complete control but require extensive hardware management. Virtual Private Servers (VPS) emerged as a more cost-effective solution, offering dedicated resources within a shared physical server. Shared hosting further reduces costs but comes with limitations on resource allocation. Cloud hosting and the subsequent rise of cloud computing models like IaaS (Infrastructure as a Service), PaaS (Platform as a Service), SaaS (Software as a Service), and FaaS (Function as a Service) signify a significant shift towards on-demand, scalable, and flexible IT solutions.

**Demystifying Cloud Computing Models**
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*   **IaaS (Infrastructure as a Service):** Provides the building blocks – servers, storage, networking – for you to deploy and manage your own applications.
*   **PaaS (Platform as a Service):** Offers a complete development and deployment platform, eliminating the need to manage underlying infrastructure.
*   **SaaS (Software as a Service):** Delivers ready-to-use applications accessible over the internet, such as Salesforce or Gmail.
*   **FaaS (Function as a Service):** Executes code snippets without the need to provision or manage servers, ideal for microservices and event-driven architectures.

**Deployment Models: Public, Private, Hybrid, and Community Cloud**
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*   **Public Cloud:** Offers shared resources over the internet, ideal for cost-effective solutions.
*   **Private Cloud:** Provides dedicated infrastructure for a single organization, ensuring greater security and control.
*   **Hybrid Cloud:** Combines aspects of both public and private cloud, offering a flexible and scalable environment.
*   **Community Cloud:** Shared infrastructure among multiple organizations with a common interest, often used for specific research or education projects.

**Navigating the AWS Infrastructure**
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AWS boasts a robust global infrastructure that spans Regions, Availability Zones (AZs), Local Zones, Wavelength Zones, and Points of Presence (PoPs). Regions are geographically distinct locations with multiple AZs for redundancy. Local Zones offer ultra-low latency connections for latency-sensitive applications. Wavelength Zones place AWS compute and storage services at the edge of the mobile network, enabling seamless mobile application experiences. PoPs provide internet connectivity for efficient data transfer.

**AWS Services: A Glimpse into the Key AWS Services**
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While AWS offers a vast array of services, this post highlights a few fundamental ones:

*   **Identity and Access Management (IAM):** Controls access to AWS resources, ensuring security and compliance.
*   **Virtual Private Cloud (VPC):** Creates a logically isolated network within the AWS cloud for your resources.
*   **Amazon Elastic Compute Cloud (EC2):** Provides scalable virtual servers for running a wide range of applications.
*   **Amazon Simple Storage Service (S3):** Offers secure, highly available object storage for various data needs.

**Kickstart your AWS Cloud Journey**
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AWS offers a Free Tier that allows you to experiment and explore its services without any upfront costs. To embark on your AWS journey, you’ll need to create an account and set up an IAM user, and a credit card. Your credit card will not billed for [the first 12 months if you only used the AWS free tier services.](https://aws.amazon.com/free/?all-free-tier.sort-by=item.additionalFields.SortRank&all-free-tier.sort-order=asc&awsf.Free%20Tier%20Types=tier%2312monthsfree&awsf.Free%20Tier%20Categories=*all#Free_Tier_details).  _Note that_ All IP rights to this blog post are reserved. Since I have been facing several content piracy cases lately, this blog post has ONLY been published on [the Software, Architecture, and Cloud blog - SWAC.blog](https://swac.blog) and canonically to [dev.to](https://dev.to/khalidelgazzar) only. If you are reading it elsewhere, then [please let us know](https://swac.blog/contact-us/)

You can check [the event presentation from this link](https://onekc.pro/AWS-ppt-public.html#1). Also, make sure to check this post shortly as I will be providing a video recording of the session to show the detailed steps.