🎉 We are launching a new weekly show: Hot off the Cloud

🎉 We are launching a new weekly show

Cloudonaut Teaser

Welcome to cloudonaut

Your launchpad for Amazon Web Services

High-quality & independent AWS content since 2015. By Andreas & Michael Wittig. We published 360 articles, 49 podcast episodes, and 48 videos. It's all free. We enjoy sharing our AWS knowledge with you.

Start reading

Welcome to cloudonaut

Your launchpad for Amazon Web Services

High-quality & independent AWS content since 2015. By Andreas & Michael Wittig. We enjoy sharing our AWS knowledge with you.

Start reading
Cloudonaut Teaser

🎧 AWS-to-go: Podcast series to get started with AWS

Get started with AWS or broaden your knowledge while walking, biking, running, driving, or whenever you enjoy listening to podcasts. Our podcast series AWS-to-go will guide you through the most important aspect of AWS. To do so, we are going through eac...

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Show Me Your Architecture Vol. 1: Scanning S3 buckets for malware

Through the AWS documentation, books like AWS in Action or AWS trainings you can gain theoretical knowledge. But beyond that, it is very valuable to learn directly from practice. In this series, we inspect real-life AWS architectures. We start with Andr...

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Enhance EFS file system protection with TLS and IAM

Two significant aspects of data security are access restriction as well as confidentiality. In the following, you will learn two techniques to increase the security of data stored on an EFS file system (Amazon Elastic File System): enabling encryption o...

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Step Functions pitfall: The execution reached the maximum number of history events (25000)

AWS Step Functions is an execution environment for finite state machines. Lately, I was running into the error “The execution reached the maximum number of history events (25000).” when listing all objects in an S3 bucket page by page. This blog post wi...

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Monitor VPC NAT gateways with CloudWatch metrics and alarms

Many VPC designs make use of public and private subnets. A NAT gateway is needed to communicate from a private subnet with the Internet. A VPC NAT gateway is a finite resource that can be exhausted. That’s why you need to add monitoring to be alerted i...

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CloudFormation cfn-init pitfall: Auto scaling and throttling error rate exceeded

cfn-init is a little helper to install and configure EC2 instances managed with CloudFormation. Lately, I was running into issues when starting a more significant amount of EC2 (let’s say 50) during an auto scaling event. This blog post will teach you w...

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Selling an AMI and a CloudFormation template as an alternative to SaaS

We have been selling software through AWS Marketplace since 2019. Selling SaaS is very popular nowadays, and most software vendors are moving to this model. However, we learned that there is a promising alternative to SaaS: Selling software bundled into...

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Updated CloudFormation vs Terraform in 2022

The most reliable way to automate creating, updating, and deleting your cloud resources is to describe the target state of your infrastructure and use a tool to apply it to the current state of your infrastructure (see Understanding Infrastructure as Co...

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Updated Amazon ECR vs. Docker Hub vs. GitHub Container Registry

Have you worked with a Linux package manager like apt or yum before? A container registry is similar, but instead of packages, it distributes container images. A container registry is a crucial aspect of a containerized workflow and infrastructure. This...

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Updated Managing application secrets: SSM Parameter Store vs. Secrets Manager

Many applications interact with external or internal systems like databases or REST APIs. When your application talks to another system, it usually authenticates with a secret, e.g., an API key, username + password, or a certificate. This leads to the q...

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Cover of Rapid Docker on AWS

Become a Docker on AWS professional!

Our book Rapid Docker on AWS is designed for DevOps engineers and web developers who want to run dockerized web applications on AWS. We lead you with many examples: From dockerizing your application to Continuous Deployment and Infrastructure as Code on AWS. No prior knowledge of Docker and AWS is required. Get the first chapter for free!

[Hot off the Cloud] Vol. 002 - All things AWS

[Hot off the Cloud] Vol. 001 - All things AWS

The command-line, SDKs, and CloudFormation | AWS-to-go Vol. 4:

Using Virtual Machines: EC2 | AWS-to-go Vol. 3

Andreas and Michael Wittig

Please support our work!

We have published 360 articles, 49 podcast episodes, and 48 videos. It's all free and means a lot of work in our spare time.

Thanks to Alan Leech, Alex DeBrie, ANTHONY RAITI, Christopher Hipwell, Jaap-Jan Frans, Jason Yorty, Jeff Finley, Jens Gehring, jhoadley, Johannes Grumböck, Johannes Konings, John Culkin, Jonas Mellquist, Juraj Martinka, Kamil Oboril, Ken Snyder, Markus Ellers, Ross Mohan, Ross Mohan, sam onaga, Satyendra Sharma, Shawn Tolidano, Simon Devlin, Thorsten Hoeger, Todd Valentine, Victor Grenu, and all anonymous supporters for your help! We also want to thank all supporters who purchased a cloudonaut t-shirt.

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#50 AWS-to-go Vol. 3: Using Virtual Machines EC2

Get started with AWS or broaden your knowledge while walking, biking, running, driving, or whenever you enjoy listening to podcasts.

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#49 AWS-to-go Vol. 2: WordPress in Fifteen Minutes - an Example

Get started with AWS or broaden your knowledge while walking, biking, running, driving, or whenever you enjoy listening to podcasts.

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#48 AWS-to-go Vol. 1: What's Amazon Web Services?

Get started with AWS or broaden your knowledge while walking, biking, running, driving, or whenever you enjoy listening to podcasts.

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#47 Builder's Diary Vol. 1: Successful Cloud Migrations

Get insights into the day-to-day challenges of builders. In this issue, Monika Oblonczek from our partner tecRacer talks about how cloud migrations succeed.

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Cover of Amazon Web Services in Action

Level up, strengthen your AWS skills.

Our book Amazon Web Services in Action is a comprehensive introduction to computing, storing, and networking in the AWS cloud. You'll find clear, relevant coverage of all the essential AWS services, emphasizing best practices for security, high availability, and scalability. Get the first chapter for free!

Review: AWS Fault Injection Simulator (FIS) – Chaos as a Service?

AWS allows us to run applications distributed across EC2 instances and availability zones. By adding load balancers or message queues to the architecture, we can achieve fault tolerance or high availability. But how can we test that our system can survi...

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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...

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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...

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What's the CO² footprint of your architecture?

Fighting climate change is one of the biggest challenges of our days. When designing an architecture, there are many important factors to consider: security, reliability, performance and costs. I’d like to add another factor to that list: the CO² footpr...

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3½ ways to workaround missing CloudFormation support

Are you following the Infrastructure as Code approach using CloudFormation? If so, I bet you encountered a situation where CloudFormation misses support for a service’s latest features. I run into those issues weekly! So what can we do about it? Do yo...

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Unusual AWS Architectures

AWS provides many building blocks. As architects, we have to choose the right building blocks to construct our systems. But sometimes, the proper building block is not available, and we have to make compromises. In this blog post, I show four unusual AW...

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Andreas Wittig and Michael Wittig

Hej, Andreas & Michael here!

We launched the cloudonaut blog in 2015. Since then, we have published 360 articles, 49 podcast episodes, and 48 videos. It's all free and means a lot of work in our spare time. We enjoy sharing our AWS knowledge with you.

Thanks to Alan Leech, Alex DeBrie, ANTHONY RAITI, Christopher Hipwell, Jaap-Jan Frans, Jason Yorty, Jeff Finley, Jens Gehring, jhoadley, Johannes Grumböck, Johannes Konings, John Culkin, Jonas Mellquist, Juraj Martinka, Kamil Oboril, Ken Snyder, Markus Ellers, Ross Mohan, Ross Mohan, sam onaga, Satyendra Sharma, Shawn Tolidano, Simon Devlin, Thorsten Hoeger, Todd Valentine, Victor Grenu, and all anonymous supporters for your help! We also want to thank all supporters who purchased a cloudonaut t-shirt. It gives us great pleasure to send our t-shirts all over the world.

With your help, we can continue to produce independent & high-quality content focused on AWS. Please support us!

Support us