AWS Series - 3.Global AWS Infrastructure

AWS Series - 3.Global AWS Infrastructure


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Amazon Web Services (AWS) boasts a global infrastructure that is a key component of its cloud computing services. The AWS global infrastructure consists of a vast network of data centres and edge locations strategically distributed around the world. This global presence enables AWS to deliver its services with low latency, high availability, and scalability. Here is an overview of the AWS global infrastructure:

Global Regions:

AWS divides the world into geographical regions, each containing multiple data centres called Availability Zones. AWS had 32 regions worldwide, with more regions continuously being added to expand its reach. The regions are code named according to where they are located e.g eu-west-1, us-east-1

Source: Amazon

How To Choose a Region For Your Infrastructure?

Here are some key considerations to help you choose the most suitable AWS region for your needs:

  1. Proximity to Users: Select a region that is geographically close to your end-users or customers. This reduces network latency and improves the performance of your applications. Use Amazon CloudFront, AWS's content delivery network (CDN), to further optimize content delivery.

  2. Compliance and Data Residency: Different regions may have specific data sovereignty and compliance requirements. Ensure that the region you choose complies with the regulations that affect your business. Some sensitive data may need to be stored within specific regions to meet legal requirements.

  3. Service Availability: Not all AWS services are available in every region. If your application relies on specific AWS services, ensure that those services are available in your chosen region. AWS publishes service availability by region on its website.

  4. Cost Considerations: Pricing for AWS services can vary between regions. While it's not always a deciding factor, it's worth comparing the cost of services in different regions to ensure it aligns with your budget.

  5. Regulatory Requirements: Some industries and organizations are subject to industry-specific regulations. Consider how your choice of region aligns with these regulations.

  6. Testing and Development: For non-production environments, you can choose a region that may not be the closest to your users but offers lower costs. This can be cost-effective for testing and development workloads.

When deciding on an AWS region, it's often beneficial to consult with your team, network administrators, legal advisors, and compliance experts to ensure you make an informed decision that aligns with your specific business needs and goals.

Availability Zones:

Within each region, there are two or more Availability Zones (AZs), which are essentially separate data centres with their power, cooling, and networking. These AZs are designed to be isolated from each other to ensure fault tolerance and high availability.

Each AWS Availability Zone (AZ) is physically separated from the others, ensuring significant physical distance, while remaining within a 60-mile radius. AWS Regions interconnect all their AZs through high-speed, low-latency, and fully redundant networking channels. Within these AZs, customers can run production applications and databases, hosting the essential compute, storage, network, and database resources that they provision in their Virtual Private Clouds (VPCs). Importantly, all traffic between these AZs is encrypted for security.

Edge Locations:

In addition to regions and AZs, AWS has a network of Edge Locations. These locations serve as content delivery endpoints for services like Amazon CloudFront, which is AWS's content delivery network (CDN). Edge locations are spread globally to reduce latency for end-users when serving content or applications.

Points of Presence (PoPs):

AWS also operates Points of Presence (PoPs), which are network locations where AWS connects to the global internet. These are used for services like AWS Direct Connect and help improve network performance.


AWS's global infrastructure is a crucial factor in its ability to provide reliable and scalable cloud services. It enables businesses to deploy their applications and services in various geographic locations to meet regulatory requirements, reduce latency, and enhance redundancy. AWS customers can choose from a wide array of services and resources that are hosted in different regions and Availability Zones, allowing them to create robust, highly available, and fault-tolerant solutions.