The AWS European Sovereign Cloud (ESC) has been generally available since January 2026 — physically isolated EU infrastructure, its own partition, EU-resident operations. Across DACH, digital sovereignty is the conversation: data control, operational…

In April I wrote about OpenClaw — my self-hosted AI agent on a Hostinger VPS, wired to Telegram, email, calendar, and GitHub. That post ended with a short "What's Next" list. Three months later, most of it shipped — and the setup feels less like a…

I co-founded HalloCasa — a global real estate broker directory with listings, profiles, subscriptions, and courses. Organic search should be a major channel for us. But when I sat down to build an SEO strategy, I did not want to spend a day clicking…

You built on Lovable — React app, Supabase auth, Postgres. It works. Then your first DACH customer or pilot asks: Where is prod hosted? Where do login and data live? That question shows up fast in Germany, Austria, and Switzerland B2B — especially HR…

Part 2: Self-hosted insights on Hetzner A German client needed production in the EU on Hetzner — clear control over where customer data and login live. The product is Arc Rider Universe: the SaaS behind universe.arc-rider.com — Mission: Interface, a…

Part 1: EU production on Hetzner After prod went live on Hetzner — React app, self-hosted Supabase login, Postgres on EU VMs; dev still on Netlify + managed Supabase — we added self-hosted observability on a dedicated prod VM. Metrics, logs, traces…

I've been running OpenClaw on a Hostinger VPS for about a month now, and it has fundamentally changed how I work. What started as "let me try this AI agent thing" turned into a powerful assistant that saves me hours every week by automating routine…

Introduction Building AI agents that work in production requires more than wrapping an LLM API. You need tool execution, streaming responses, cost management, and integration with existing systems. After evaluating several frameworks for ai-secure…

Introduction Building production-ready AI agents requires more than just a prompt and an LLM. You need infrastructure for state management, tool execution, and secure deployment. I recently built https://ai-secure.dev, a SaaS for automated security…

Recently, a client approached me with an intriguing request: to migrate their SST (v.2 https://v2.sst.dev/) project to Terraform. This task presents several interesting challenges, particularly in mapping SST and CDK constructs to equivalent…

Hi Friends. My AWS Solution Architect Professional expires in mid-2022. Since then, I've occasionally thought about renewing, but I didn't want to invest the time to prepare. But now a customer was paying me to take the exam, so why not. Here's some…

Recently, AWS released Claude v3. It comes with the Haiku and Sonnet flavors. Both are big improvements over the previous version. We recently updated our arcBot to use Claude v3 Sonnet and are very impressed with the results. Not only are the…

AI is boosting the corporate landscape. Many simple and complex processes in companies can be greatly simplified or even completely automated using AI. Jakob, my co-founder, and I see it as an exciting challenge to simplify access to AI for small and…

Images are crucial to effective advertising! AI has made it incredibly easy to create images. But how do you know if an image will move your audience or not? You can try AB Picture Testing. With AB Picture Testing, two different image variants are…

I recently started exploring SST as an alternative to my favorite full-stack set consisting of Projen, AWS CDK, and React. I have been thoroughly impressed with the experience so far. In this article, I will demonstrate how to create a Next.js App…

Using the AWS Bedrock API for MVPs is incredibly enjoyable! I recently wrote an article on how you can make the LLM Claude respond in JSON. You can check it out here. While it's a lot of fun, testing your LLM settings and prompts can become tiresome…

Hi there, I'm new to Powertools for AWS Lambda (TypeScript). Though I hear a lot of my DevOps friends say that it's a great tool for building serverless applications, I've never had the chance to use it myself. So I decided to give it a try and see…

Validating the response from your Language Learning Model (LLM) is a critical step in the development process. It ensures that the response is in the correct format and contains the expected data. Manual evaluation can quickly become tiresome…

Working with the AWS Bedrock API is an exhilarating experience! I came across an interesting business case where I needed to develop an AI MVP. The MVP generates JSON data based on a prompt and utilizes the anthropic.claude-v2:1 model in AWS Bedrock…

A fresh start can be daunting, especially when it comes to revamping an existing Java Spring application. This was my journey with the HalloCasa real estate platform, and here's how we took it from deployment nightmares to smooth, cloud-native…

AWS UG Meetups sind eine tolle Möglichkeit um sich mit anderen AWS Enthusiasten auszutauschen. Ich zeige dir wie ich das AWS UG Lisbon Meetup organisiert habe. Vorgeschichte Anfang 2023 sind wir von Deutschland nach Lissabon in Portugal umgezogen…

What is a Prototype? A prototype is a preliminary version of a product, often used for testing and validation purposes. It allows you to experiment with different ideas and get feedback from users before investing significant time and resources into…

Would you like to grow your chat community? Chatsindex.com indexes chat messages and make them searchable for search engines like Google. Well, will be as this is still a prototype! Through SEO (Search Engine Optimization) it is ensured that the…

Hi, With Amplify AppSync it is possible to configure an AWS AppSync with declarative code. With Directives like @model, @auth or @function other AWS services like DynamoDB, Cognito or Lambda can be connected to AppSync in a meaningful way. This makes…

Hi, I am very excited to work on our SaaS product. In the Minimalempires Community I found a great CoFounder with a great idea. With the low-code platform ninox.com we want to validate this idea and build a prototype. So far I had no experience with…

Hi, In this blog post, I want to briefly explain what cdktf is and how you can use it to create a TypeScript Lambda. The motivation for this came from a StackOverflow post. What is cdktf? The Cloud Development Kit for Terraform (cdktf) is a toolkit…

Hi, Terraform CI/CD staging pipelines, where the CD stands for Continuous Deployment, allow a secure and continuous development of infrastructure with Terraform. Typically, a commit in the main branch starts the pipeline and the desired changes are…

Hi, Seamless integration of AWS CDK and Amplify apps used to be very cumbersome! With a runtime-config for the Amplify frontend React app, it's now much easier. Here I would like to introduce you to the idea of a runtime-config. In my fullstack…

In this weekly newsletter, I write a summary of posts that got my attention during the week. I center around topics AWS, DevOps, Architecture, AWS CDK, Serverless, Data Engineering, Data Analytics and much more. If you like my content follow me on my…

This week was my first week solely working as a freelancer. That is scary but exciting too :)! In this weekly newsletter, I write a summary of posts that got my attention during the week. I center around topics AWS, DevOps, Architecture, AWS CDK…

This week was tough as it was my last week at Monada. It was a great time working with great engineers and I am super excited to follow the future development of Monada :). In this weekly newsletter, I write a summary of posts that got my attention…

This week was hot in Germany. Not just in terms of cool news around DevOps and more, it was physically hot :). My highlight of this week was the in-person AWS UG Meetup in Berlin. It was super amazing to see some AWS CDK friends in real :)! In this…

In this weekly newsletter, I write a summary of posts that got my attention during the week. I center around topics AWS, DevOps, Architecture, AWS CDK, Serverless, Data Engineering, Data Analytics and much more. If you like my content follow me on my…

cdk-lambda-timeout-eng (Click me :D) Ahoy, AWS Lambda is probably one of the most famous if not the most famous compute service from AWS. In fact, Lambda is also my favorite AWS service because it makes implementing business logic very easy and…

This week was crazy exciting. On Thursday I took the train to Munich for attending to an AWS Meetup and visit a client and friend. Both events were super empowering and in times like this, I feel very grateful and thankful to work in this area. In…

Hi everyone. I want to make my senjuns project production-ready. So far I had only deployed it in my developer AWS account. My developer account has no AWS services configured that are needed for a reasonable production environment. These are for…

Hello friends. Another week passed by! My highlights of the week were the German CDK Happy Hour Meetup on Wednesday where an AWS CDK project was presented which leverages AWS ECS with Blue/Green deployments. That is super exciting as that is not…

Hi folks. What a week. Close by the Azure Meetup started happening again after like 2 years. Was great to see my old Meetup friends again. You might think wait what why Azure you are an AWS guy? Yes, true but learning more about the other cloud…

In this weekly newsletter, I write a summary of posts that got my attention during the week. I center around topics AWS, DevOps, Architecture, AWS CDK, Data Engineering, Data Analytics and much more. If you like my content follow me on my usual spots…

In this weekly newsletter, I write a summary of posts that got my attention during the week. I center around topics AWS, DevOps, Architecture, AWS CDK, Data Engineering, Data Analytics and much more. If you like my content follow me on my usual spots…

In this weekly newsletter, I write a summary of posts that got my attention during the week. I center around topics AWS, DevOps, Architecture, AWS CDK, Data Engineering, Data Analytics and much more. If you like my content follow me on my usual spots…

To clear up a possible misunderstanding right away! Serverless does not mean that there are no more servers! On the contrary! Cloud providers such as AWS, which offer serverless, have many servers worldwide. In the image below you can see the…

In this weekly newsletter, I write a summary of posts that got my attention during the week. I center around topics AWS, DevOps, Architecture, AWS CDK, Data Engineering, Data Analytics and much more. If you like my content follow me on my usual spots…

In this weekly newsletter, I write a summary of posts that got my attention during the week. I center around topics AWS, DevOps, Architecture, AWS CDK, Data Engineering, Data Analytics and much more. If you like my content follow me on my usual spots…

Hi. In AWS, it is best practice to create new accounts if, for example, you want to deploy different stages such as dev, qa and prod for your solution. It is also common to create so-called sandbox AWS accounts to provide these new employees for…

In this weekly newsletter, I write a summary of posts that got my attention during the week. I center around topics AWS, DevOps, Architecture, AWS CDK, Data Engineering, Data Analytics and much more. If you like my content follow me on my usual spots…

In this weekly newsletter, I write a summary of posts that got my attention during the week. I center around topics AWS, DevOps, Architecture, AWS CDK, Data Engineering, Data Analytics and much more. If you like my content follow me on my usual spots…

Hi. As of March 2022, I am an AWS Community Builder. In this post, I will explain to you what an AWS Community Builder is and how you can become one. In addition, I will reveal my motivation for why I wanted to become an AWS Builder in the first…

In this weekly newsletter, I write a summary of posts that got my attention during the week. I center around topics AWS, DevOps, Architecture, AWS CDK, Data Engineering, Data Analytics and much more. If you like my content follow me on my usual spots…

Hi Storing data like JSON logs in DynamoDB is a great idea as DynamoDB is very scalable. In addition, it is easier to transfer data into a DynamoDB table using for example Lambda and AWS SDK. Also, it makes analyzing the logs easier for example the…

Hi. AWS component diagrams are a great way to visualize complex AWS architectures. For many, they are much more intuitive than, for example, CDK code. I myself work a lot with AWS component diagrams when I develop new AWS systems. What has always…

Hi, Private S3 assets like images or videos are a frequently needed feature for apps. After the user has logged in, those private assets are shown to him. These are typically stored in an S3 bucket. This S3 bucket must not be publicly available. The…

Hi, Lambda@Edge are Lambdas that are executed in the AWS Cloudfront Locations. That can increase performance and reduce latency compared to normal Lambda. Cloudfront together with Lambda@Edge can also being used as a proxy for a private S3 asset…

Hi, I have decided to go back to working with AWS full time. Even though I had a lot of fun diving into the world of Blazer and Dotnet, I just missed working with AWS too much. So I asked around in the German AWS community if anyone else is looking…

Hi CDK folks. A few months ago I told you about my exciting project to build a CDK BitBucket Staging Pipeline. Since then, a lot has happened and we have continued to develop the pipeline. Problems with CDK cross-stack references CDK cross-stack…

A warm hello, Once again this year I would like to say thank you. The center of 2021 of course was my family. Still my thanks from 2021 are still valid! In this post I would like to say thanks specifically for 2021 and its events. God This year, too…

Hi CDK folks For a startup I am building a security platform. The rough process for using the platform is something like this. The customer answers a few questions and then gets a security evaluation. For the prototype I decided to use AWS…

I have been working for a client with very exciting AWS CDK tasks. The customer is heavily into the Atlassian ecosystem. BitBucket is used to host the code. Now the customer wants to move more into the DevOps space and manage their AWS deployments…

Prowler Video (Click me :D) Hi Folks! Developing in AWS is fun and the possibilities to build cool stuff seem endless. But are these cool things secure and do they follow AWS's best practices? With Prowler AMI you can check just that with far over…

Hi Folks! Toni De La Fluente has developed the super cool AWS Security Tool Prowler. Prowler is a cli tool for performing and consulting AWS Security Assessment, Auditing, Hardening and Incident Response. With more than 180 checks, Prowler provides…

Hi Folks! My last post was about how to make a wordpress deployment more DevOps friendly using Docker and some cool scripts. Today I want to talk about another exciting task. The customer wants new wordpress posts to be created automatically using…

Hi guys! For my newest customer I built a great AWS backend with AWS AppSync and many other great AWS services. But now I'm faced with the exciting task of making the AppSync or GraphQL API callable in a Wordpress frontend. I have heard a lot about…

Hi Folks! I am currently working on an exciting project where it should be possible to create Ec2 instances flexibly via an API. These instances should then be made available to the customer for training purposes. The instances should be customized…

Hi CDK Fans! With Custom Constructs it is possible to implement certain features as Level 2 AWS CDK Constructs. In fact, many of the AWS CDK Constructs already in use are already Level 2 Constructs. I have already built some custom constructs. There…

Hi. In my previous blog posts I showed how to generate analytics from DynamoDB table using AWS QuickSight. Unfortunately, QuickSight is only minimally supported by Cloudformation and QuickSight's DataSource and DataSet are only on the roadmap so far…

Hi. In my last blogpost, I covered exciting work with AWS Athena and AWS QuickSight. If you want to do analytics from small AWS DynamoDB tables, everything should work smoothly. By small I mean a relatively small number of columns in the table. It…

Hi. AWS DynamoDB is an extremely performant and scalable NoSQL database. Due to the lack of a schema, data, called items in DynamoDb, can be extremely flexible. This also allows a kind of evolutionary development of the items by simply creating new…

Hi. For a long time I've been dreaming of building a platform with a great DevOps experience. I want to have cool stuff in it like: Infrastructure as Code (IAC) CI / CD (Continuous Integration / Continuous Deployment) A staging e.g. dev, qa, prod…

Hi. Our development team does an exciting experiment. We work in Scrum and organize ourselves mainly with GitHub. That works really great1. In this article I describe how we use GitHub for that. Even though I have experience with Scrum for about…

Hi Projen folks. Projen is becoming popular. I've been using it myself for about half a year now and I'm still totally hooked. Recently I even managed to build a Docker Image Release Cycle to Docker Hub with it. My Docker InfluxDB Repo now…

Before it begins. Affiliates regarding the IOT devices are in the post Hi. A few weeks ago I presented my new IOT deployment here. It consists of a Raspberry 4 DE US UK, Zigbee Türsensor DE UK and the Zigbee Empfäger DE UK. The software that runs on…

Before it starts! The Trading212 link is an affiliate where you and I get each a share for free. Hi, I started with stocks in November 2020 and since them I am an active user of the trading app Trading212. The main reason is that I do not see a bank…

Hi friends of the chaos, The 37th Congress has taken place from 27 - 30 December 2020 and due to the pandemic everything was remote. So the Chaos Congress got the name RC3. This was my very first Chaos Computer Club event that I attended. How great…

Hi Raspberry Friends. Note: I have used commission links in this article and marked them with "*". Since recently I can call myself owner of a Raspberry. On Cyber Monday I bought a *Raspberry 4 with 4 GB. I have had previous experiences with Home IOT…

Hi :). The new ALPS Converter I developed makes it possible to convert an ALPS specification (spec short) to OpenApi, GraphQL or other APIs. Other great features of my ALPS unified library are: automatic versioned releasing to NPM, PyPi, Maven and…

Hi :). AWS offers many exciting Api technologies. Those include the AWS Api Gateway which is an implementation of a REST Api or AWS Appsync which implements a GRAPH QL Api. Each of these AWS Api implementations has its advantages and disadvantages…

A warm welcome, As we are now approaching the end of 2020, I would like to take this opportunity to show my gratitude. For this I would like to dedicate a whole blog post :). Even if it was different for many, for us 2020 was the best year as a…

Hi Low Carber :) In the last few months I have successfully lost a lot of weight with Optimised Fasting. Per week I have lost about 500 grams, that is half a kilo. I have already gained a lot of experience with fasting like water fasting. Optimised…

Hi Alfrescans. Object Character Recognition (short OCR) is a cool tool as it allows you to make your scanned documents incredible useful as it recognizes characters and words and makes those accessible in your document like through a PDF sandwich. A…

Ahoi AWS'ler In my AWS project, where I can start, stop and schedule instances of Alfresco via REST API, I use AWS Cognito as identity provider for user management. Cognito makes it easy for me to create new users and give them the rights to access…

Hi CDK Fans, Recently I published a blog post about the AWS CDK PipelineApp Library I'm working on. If you are interested in the AWS CDK Pipeline you should read that one! Meanwhile I have used the library dozens of times in my projects and have…

Hi CDK Fans, Building AWS CDK pipelines is fun. Since the middle of this year (2020) there is even a high level CDK pipeline which brings many advantages like self-mutate, a simplified cross-account deployment and a better abstraction from the…

Hi CDK Fans, Welcome back to my little series "AWS CDK Let's build a platform". In the previous episode AWS CDK Let's build a Platform - Frontend I explained how we build a cool static React Web App with AWS CDK for my company unimed.de. AWS CDK is a…

Hi CDK fans, Since I have the great opportunity to help building a platform for my company unimed.de, I want to explain how it looks like. At the moment we are working on an exciting platform for efficient storage and retrieval of internal data. My…

Sponsored by PMGA Tech Hi Alfrescans. Digital signatures are one of the most used forms of integrity checks on the Internet. Integrity check here means whether the document in question is the original and therefore not a fake or a modified version…

Hi Alfrescans. Infrastructure as code has been popular in DevOps for quite some time. One of the first pioneers of IaC (Infrastructure as Code) is AWS with Cloudformation. For this, cloudformation templates must be written in JSON or YAML. This works…

Ahoy AWS CDK Fans Creating any number of Ec2 instances with a Lambda is no problem. But if you want to create more complex deployments such as LoadBalancer, Securitygroups, Scalingroups, etc. with a Lambda that is tricky! CDK Apps are a good choice…

Hi CDK Fans In the previous Part I I have built the DynamoDB Stream to Lambda Solution Construct into my Alfresco Provisioner CDK Deployment and discussed the benefits of doing so. This week I integrated more CDK Solutions Constructs. CDK Solutions…

Ahoy AWS'ler Recently the first CDK Solution Constructs were released. It promise a new level of abstraction for CDK Constructs by combining often used Cloudformation patterns into their own CDK Constructs. For example, if you want to use an API…

Hi Alfrescans. Some months ago I reported about an exciting project with the customer where we used the latest ACS and APS version. So far everything has been running smoothly. But now we were facing an exciting challenge. We wanted to start…

Hello folks :). In this article I want to tell you how easy it can be to create a backend REST server using OpenApi specifications. My ultimate goal is to make backups and the restore process of Alfresco data as easy as possible. After much research…

Hi Alfrescans. During the Alfresco Hackathon in May 2020 I implemented a Docker Companion extension for the Docker Alfresco Installer to manage SSL certificates. These certificates can be used for HTTPS connections. The SSL certificates are issued…

Hi Alfrescans. Have you ever installed Alfresco on an AWS Ec2 instance? Maybe even with Docker Compose? Even though Docker has made installing Alfresco easier, it is still a lot of work! First af all you have to create an Ec2 instance. To do this…

Hi Alfhackas. The Alfresco hack-a-thon was great. What I liked most were the personal conversations with many great ex-colleagues and other Alfresco folks. In addition, I was able to learn valuable information about planned projects within Alfresco…

Hi Alfrescans. On May 11, 2020, Alfresco will host a virtual hackathon. You can find the current project ideas here at hub.alfresco.com. With this post I want to invite you to participate. Why Participate? There can be several reasons why you should…

Hi AWS Fans, Last time I described how well AWS CDK is suited for describing infrastructure as code. This article is about how CDK could look in a test and production environment. In my private project I have already implemented something like a…

Hi Alfrescans. It is time again to report about an exciting Alfresco partner project from me. For a customer here in Germany I am developing a POC which should use ACS 6.2 and APS 1.10. After a bit of persuasion, I was able to convince those involved…

Ahoi AWS'ler and Swagger fans In the last post I showed how AWS CDK can be used as a welcome alternative to YAML for describing your cloud infrastructure. Working on my CDK project from I encountered a problem handling Swagger files. But first I want…

Ahoy AWS folks For a private project I have been working on an AWS CDK example in the past few days. AWS offers a range of great AWS CDK examples. The experience I had was so good that I decided to write a blog post about it. I was fortunate to work…

Hi Alfrescans, I made great experiences in my last project with the Alfresco Docker Installer. You can read more about it in my previous blog post. Now I am of course excited to add valuable new features to it. One of them is the Start Script which…

Hi Alfrescans, In this article I will describe how to use Docker to test Amps and Jars extensions for ACS. Share Customizations and Custom Content Models were developed for a customer of OBJECT, which I wanted further develop and test quickly and…

Hi folks. As in October 2019 I had the amazing opportunity to buy a house in the beautiful town called Ludwigslust in Germany. It is an old but recently renovated lovely house. As I'm much interested in tech I couldn't wait to try some cool Smart…

Good day Wie im vorangegangen Blog Post erwähnt, arbeite ich an einem spannenenden AI Prototyp welcher ACS Community als Content Managment System verwendet. Darüber hinaus laufen noch gewisse AI Services welche über die ACS Schnittstelle wie CMIS und…

Hello. In this article I briefly summarize the first week at OBJECT. For myself that has a couple of advantages. On one hand I practice writing articles and on the other hand it serves as a reflection on the previous days. As well for some of my…

Dear reader. I am happy to announce that I will switch to OBJECT on February 14th. This is a partner company of my current company Alfresco. OBJECT mainly operates in the German and Swiss ECM (Enterprise Content Management) market. Below I list my…

Hi AWS Fans. On 3rd December 2019 AWS announced the general availability of Fargate for EKS (https://aws.amazon.com/blogs/aws/amazon-eks-on-aws-fargate-now-generally-available/). That unburdens the need of managing the infrastructure for the pods. In…

AWS, endlessly services, we are writing the year 2019 the 9th July at 1 pm. I finally smashed the AWS Certified Solutions Architect - Professional exam. After two failed attempts the last screen on the third attempt contained the lovely words…

Water Fasting what is that? As the name describes, you are only allowed to drink water for the time of the fasting. No teas, coffee, sugar-less or sugar-free drinks except, of course water. As from personal experience it is much easier than juice…