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Your launchpad for Amazon Web Services

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Welcome to cloudonaut

Your launchpad for Amazon Web Services

Cloudonaut Teaser

Unboxing S3 Object Lambda

Amazon S3 Object Lambda offers a way to execute a Lambda function when someone wants to download a file (GetObject) from an S3 bucket. You can implement whatever logic you wish and return any data as the response via the WriteGetObjectResponse API. Keep...

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#032 Unboxing Amazon S3 Object Lambda

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Amazon S3 Object Lambda offers a way to execute a Lambda function when someone wants to download a file (GetObject) from an S3 bucket. You can implement whatever logic you wish and return any data as the response via the [WriteGetObjectResponse](https:/...

#031 How I use AWS Security Hub

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AWS Security Hub provides a centralized and org-wide overview of how well you are doing in terms of security. Security Hub follows two strategies to collect the needed information: First, Security Hub runs checks based on security standards. Second, Sec...

#030 Real-world CodePipeline CI/CD examples

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AWS CodePipeline helps us to orchestrate CI/CD pipelines. To implement real-world pipelines, CodePipeline calls additional AWS services to do the work. E.g., CodeBuild to run arbitrary scripts, CloudFormation to create or update stacks, or CodeDeploy to...

#029 Running containers on spot infrastructure

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Running workloads on spot infrastructure is significantly cheaper. You can reduce your bill by 50% or more. Keep in mind that spot workloads can be terminated at any time. If you are lucky, you will be noticed 2 minutes upfront to shut down gracefully. ...

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How I use AWS Security Hub

AWS Security Hub provides a centralized and org-wide overview of how well you are doing in terms of security. Security Hub follows two strategies to collect the needed information: First, Security Hub runs checks based on security standards. Second, Sec...

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AWS Architecture Pattern for Scheduled & Serverless Batch Processing

Scheduled batch jobs are the heart of many business processes implemented by enterprise applications. Reports are generated daily, databases are optimized over the weekend, and business logic is executed nightly. The importance of batch jobs satisfies a...

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Real-world CodePipeline CI/CD examples

AWS CodePipeline helps us to orchestrate CI/CD pipelines. To implement real-world pipelines, CodePipeline calls additional AWS services to do the work. E.g., CodeBuild to run arbitrary scripts, CloudFormation to create or update stacks, or CodeDeploy to...

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Serving content only to logged-in users with CloudFront Signed Cookies

This blog can be accessed by anyone with access to the free Internet. It’s a public website. But many websites offer a members-only area. You have to log in to get access to parts of the website. In this blog post, I demonstrate how CloudFront can be us...

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Running containers on spot infrastructure

Running workloads on spot infrastructure is significantly cheaper. You can reduce your bill by 50% or more. Keep in mind that spot workloads can be terminated at any time. If you are lucky, you will be noticed 2 minutes upfront to shut down gracefully. ...

Read on

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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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!

#40 Review: AWS Fault Injection Simulator (FIS)

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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#39 Serverless in the Enterprise

We coached developers building their first Serverless applications for a large company recently and want to share our learnings and observations with you.

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#38 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...

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#37 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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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 & Michael Wittig

Andreas Wittig and Michael Wittig
About us

We are independent consultants, technical writers, and programming founders. All these activities have to do with AWS. And by the way, we are brothers too.

In 2009, we joined the same company as software developers. Three years later, we were looking for a way to deploy our software—an online banking platform—in an agile way. We got excited about the possibilities in the cloud and the DevOps movement. It’s no wonder we ended up migrating the whole infrastructure of Tullius Walden Bank to AWS. This was a first in the finance industry, at least in Germany! Since 2015, we have accelerated the cloud journeys of startups, mid-sized companies, and enterprises. We have penned books like Amazon Web Services in Action and Rapid Docker on AWS, we regularly update our blog, and we are contributing to the Open Source community. Besides running a 2-headed consultancy, we are entrepreneurs building Software-as-a-Service products.

We are available for projects.

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