AWS Cloud Praticttioner #01

Source: Dev.to

Well, when I decided to focus my career in the area of DevOps, I searched for a roadmap. The roadmap highlighted the following topics:

• Programming Languages: Python, Go
• Operating System: Linux
• Networking and protocols
• Docker
• Git / GitHub
• AWS
• Terraform
• Ansible
• GitHub Actions

I decided to work on projects and pursue certifications, starting with the AWS Cloud Practitioner. This series will help us understand cloud computing and, specifically, AWS.

What is Cloud Computing?

Cloud computing is essentially the on‑demand delivery of IT resources over the internet with pay‑as‑you‑go pricing. You can access only the capacity and resources you need.

Benefits of the Cloud

1. Global Reach in Minutes

The global presence of AWS, with data centers worldwide, lets you deploy applications to customers around the world quickly, providing low latency and enhanced fault tolerance.

2. Trade Upfront Expenses for Variable Expenses

You don’t need to build a data center. With AWS, you start a resource and only pay for what you use and for the time you use it.

3. Economies of Scale

• Variable Costs: Change according to usage.
• Economies of Scale: Cost per unit decreases as usage increases.
  By sharing resources among millions of customers, AWS can purchase hardware at large scale, reduce maintenance costs, and pass those savings to you through lower pay‑as‑you‑go prices.

4. Stop Guessing Capacity

You can launch Amazon EC2 instances when needed and pay only for the compute time you use. Scale in or out in response to demand, avoiding over‑provisioning.

5. Eliminate Data‑Center Operations

AWS removes the need to invest in physical data centers, utilities, and ongoing maintenance. You can reallocate resources to more strategic initiatives.

6. Increase Speed and Agility

The cloud enables rapid deployment of applications and services, accelerating time‑to‑market and allowing quicker responses to changing business needs.

Define the AWS Global Infrastructure

AWS Regions and Availability Zones

• Region: A geographic area that contains AWS resources.
• Availability Zone (AZ): A single data center or a group of data centers within a Region. AZs are spaced tens of miles apart—close enough for low latency but far enough to reduce the risk of simultaneous failure.

Each AWS Region consists of multiple isolated AZs, providing redundancy and resilience.

Benefits of High Availability and Fault Tolerance

• High Availability: If one AZ fails, workloads can fail over to another AZ, ensuring continuous operation.
• Fault Tolerance: Redundant systems across multiple locations protect against failures, enhancing overall reliability.

That’s it for today: we covered Concepts of Cloud Computing, Benefits of the Cloud, and an overview of the AWS Global Infrastructure (excluding edge locations).

If you have any questions or comments, feel free to leave a comment.

Thank you, and see you in the next post!