Networking & Content Delivery

Category: Technical How-to

Using latency-based routing with Amazon CloudFront for a multi-Region active-active architecture

This post guides you through setting up the networking layer for a multi-Region active-active application architecture on AWS using latency-based routing in Amazon Route 53 with Amazon CloudFront to deliver a low-latency, reliable experience for your users. Building active-active architectures using AWS networking services improves your application resiliency and performance. However, there can be cost and […]

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Connecting Networks with Overlapping IP Ranges

A common situation we see in customer networks is when there are resources with overlapping IP address ranges that must communicate with each other. Frequently this occurs when companies are acquired and have used the same private (RFC1918) address ranges. However, it can also occur when a service provider with a unique IP range must […]

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Introducing IPv6-only subnets and EC2 instances

In June 2021, we announced our continued commitment and innovation towards the enablement of IPv6 on AWS. Today, we take a monumental step forward with the ability to create an IPv6-only architecture on AWS. With this launch, Amazon Virtual Private Cloud (VPC) now allows you to create IPv6-only subnets in your dual-stack VPCs and launch […]

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Expedite your IPv6 adoption with PrivateLink services and endpoints

AWS now supports IPv6 for AWS PrivateLink services and endpoints. PrivateLink support for IPv6 expedites IPv6 adoption by decoupling the service consumer and service provider IP protocol version. Even if a service provider has not started to support IPv6 for all their back-end services, service consumers can use IPv6 within their VPCs to access the […]

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Introducing IP-based routing for Amazon Route 53

Amazon Route 53 is a highly available and scalable cloud Domain Name System (DNS) web service. Route 53 provides you with the ability to manage traffic to your public domains globally through a variety of routing types, including latency-based routing, geolocation, geoproximity, and weighted routing – all of which can be combined with DNS failover […]

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CloudFront and Lambda

Using Amazon CloudFront with AWS Lambda as origin to accelerate your web applications

In this blog, you will learn how to use the Lambda Function URL feature to define a AWS Lambda Function as origin for Amazon CloudFront. Lambda Function URL capability provides a dedicated HTTPS endpoint for your Lambda function deployed in an AWS Region. Function URLs are a great fit for use cases where you must […]

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Collecting AWS networking information in large multi-account environments

Many organizations need to review or audit networking information within AWS environments that contain multiple AWS accounts. At scale, questions such as “which accounts have Internet access enabled?”, “which account owns the Elastic IP 198.51.100.101?” and, “what are the IP addresses of my NAT gateways?” can be challenging to answer. Traditionally, within an individual account, […]

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Implementing Default Directory Indexes in Amazon S3-backed Amazon CloudFront Origins Using CloudFront Functions

Amazon CloudFront Functions now makes it possible to do things that were previously only possible with AWS Lambda@Edge, but in a more performant manner. For example, now you can manipulate the URI path—something that is essential when you want to secure an origin using an Origin Access Identity (OAI) with Amazon CloudFront. In 2017, I […]

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Running multicast-enabled containers on AWS

Introduction Multicast is a popular IP-based communication mechanism that is actively employed in many industry verticals, including finance, media, telco, transportation, and others. This post describes how to enable multicast in container environments orchestrated by Amazon Elastic Container Service (ECS). Although Amazon ECS is a fully managed container orchestration service, some additional steps must be […]

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Bring Your IPv6 Address Space to Amazon VPC IP Address Manager (IPAM)

Introduction Every device, resource, and workload connected to an Internet Protocol-based network depends on its IP address to communicate. The public and private IPv4 addressing space exhaustion, organizational mandates, and the need to provide service availability to IPv6-only clients drive an increasing number of organizations to adopt IPv6 in their environments. A well-managed IP address […]

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