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CloudFormation Modules

Copying and pasting code or configuration comes with a lot of challenges. Fixing a bug requires you to find all the copies to fix them as well. Adding new features to all the copies becomes difficult if copies diverge. That’s why many programming langua...

Does your VPC endpoint allow access to half of the Internet?

Are you using VPC endpoints to enable private connections between your VPC and AWS services? Drop everything and check the policy attached to your VPC Endpoint for S3. You might have allowed access to half of the Internet - assuming that half of the Int...

AWS Client VPN: Connected with the Cloud

Everybody talks about remote work those days. A fundamental prerequisite is to provide secure connectivity to your infrastructure. No matter if only a few engineers or users need to access resources within a private network. About two years ago, AWS ann...

5 good reasons not to get AWS certified

I completed my first AWS certification in 2014: AWS Solutions Architect Associate. During the following years, I accomplished all five associate and professional certificates. However, Michael and I decided not to renew our AWS certifications about a ye...

Unboxing Amazon Managed Service for Prometheus (AMP)

AWS announced Amazon Managed Service for Prometheus (AMP) in December 2020 during re:Invent. Prometheus is a monitoring system as well as a time-series database. Let’s take a first look at the managed service that is currently in public preview. What i...

Guest authors wanted!

Have you ever dreamed of publishing an article on cloudonaut? Are you a freelancer or employee who wants to attract attention to boost your career? This is your chance! We are looking for guest authors who are interested in publishing an article on clou...

What's new about AWS SDK for JavaScript v3?

The AWS SDK for JavaScript v3 is generally available since December 2020. This challenge unites all AWS users: is this new version worth investing your precious time? In this blog post, I show you the new capabilities and use cases where they help you ...

Debugging a VPC: Security Groups, Network ACLs, and Routing Tables

Configuring a VPC (Virtual Private Cloud) and firewalls (Security Groups and Network ACLs) is tricky. What to do when you cannot find the cause for a connection refused or connection timed out error when connecting to an EC2 instance, RDS database insta...

Cheap, Durable, Fast. How to choose an EBS volume type?

Elastic Block Storage (EBS) provides solid state drives (SSD) and hard disk drives (HDD) for EC2 instances. The virtual machine accesses the persistent storage via the network. In December 2020, AWS announced another volume type called General Purpose S...

How to Become an AWS Certified Solutions Architect

In 2012, I created my first AWS account. Back then, I worked as a software engineer and was looking for a way to deploy an online trading platform. Two years later, I attended re:Invent — the yearly conference organized by AWS — in Las Vegas for the fir...