Category: Networking & Content Delivery

Introduction Network Load Balancer (NLB), part of the Elastic Load Balancing Family, is the flagship Layer 4 load balancer for AWS. It offers elastic capacity, high performance, and integration with many other AWS services (such as Amazon EC2 Auto Scaling). NLB is designed to handle millions of requests per second while maintaining ultra-low latency, improving […]

AWS PrivateLink provides private, secure connectivity between VPCs, AWS services, and your on-premises networks, without exposing your traffic to the public internet. AWS PrivateLink offers three primary benefits to customers. First, it provides a way for two parties to establish private connectivity without requiring an Internet Gateway (IGW), thereby helping both parties to deploy airtight […]

As of September 5, 2024, GWLB allows you to configure the GWLB transmission control protocol (TCP) idle timeout from 60 seconds to 6000 seconds. And, GWLB uses either a 2-tuple, 3-tuple, or a 5-tuple hash to define a flow and routes all packets of a flow to one of its backend targets. Refer to the […]

Today, Amazon CloudFront announced the release of two new APIs, ListConflictingAliases and AssociateAlias. These APIs are useful when you need to locate or move Alternate Domain Names (CNAMEs) when you encounter the CNAMEAlreadyExists error code. In addition, more use cases have been enabled when you are working with wildcard CNAMEs across accounts. Before diving into […]

Introduction The Domain Name System (DNS) is one of the most critical components for almost any network as every service relies on a functional DNS service. Amazon Route 53 Resolver (sometimes referred to as “AmazonProvidedDNS” or the “.2/+2 resolver”) provides a highly available and scalable DNS service that customers have come to rely upon for their recursive DNS […]

Introduction Your organization may have a sprawling network built with variety of topologies. As your organization begins to embrace cloud, you extend your network to AWS using a hybrid connectivity architecture. Over time, traffic patterns change as more and more of your applications move to the cloud. This means that you can start transforming your […]

This is a blog post by FactSet’s Cloud Infrastructure team, Gaurav Jain, Nathan Goodman, Geoff Wang, Daniel Cordes, Sunu Joseph, and AWS solutions architects Amit Borulkar and Tarik Makota. In Factset’s own words “FactSet creates flexible, open data and software solutions for tens of thousands of investment professionals around the world. These solutions provide instant […]

An update was made on July 24, 2025: With the availability of AWS Network Firewall Native AWS Transit Gateway support, the below design approach can be greatly simplified and is therefore no longer recommended. Instead we recommend to use AWS Network Firewall Native AWS Transit Gateway support. In this blog, we will walk through the […]

Introduction In this article, I will walk you through the steps to configure Amazon API Gateway in combination with AWS Global Accelerator to present Internet-facing API via static IP addresses to end users. This design addresses the need for static IP safelisting and also provides additional performance benefits to end users by sending user’s traffic […]

This post will describe how to use multicast and Internet Group Management Protocol (IGMP), two of the newer features of AWS Transit Gateway, to enable applications and services to discover each other automatically when running in Amazon Virtual Private Cloud (Amazon VPC) environments. Service discovery means that a service client, such as a network file […]