Tech Blogs - Tutorials Dojo

AB-900 Microsoft 365 Copilot and Agent Administration Fundamentals Exam Study Guide
Bookmarks Study Materials Key Topics to Focus On Validate Your Knowledge Final Remarks The AB-900 Copilot & Agent Administration Fundamentals certification exam is designed for IT professionals who work with Microsoft 365 and need to understand how to administer Microsoft Copilot and [...]
Deploying an AWS Application Load Balancer (ALB) Using Terraform
If you’ve tried building an ALB manually in the AWS Console, you already know the drill create a VPC, configure subnets, set up security groups, launch EC2 instances, create a target group, add listeners, and then double check everything because one small misconfiguration can break the whole setup. It [...]
How to Break Into Tech (With Security in Mind)
Let’s talk honestly for a second. If you want to break into tech securely, you need to think differently from the start. A lot of people say they want to “break into tech,” but very few think about structure, architecture, and security from day one. What they usually mean [...]
Stop Running OpenClaw on Your Laptop: How I Built a Secure Personal AI Assistant Using Amazon Bedrock
I'll admit. The first time I heard about OpenClaw and its features, I was obsessed. The idea of having an AI that could actually do stuff rather than just giving responses to prompts felt like living in the future. As a university student, it’s a given that I have [...]
Improving Application Security with AWS Security Agent
Modern software teams are very fast today. Code is pushed daily. Pipelines deploy automatically. Features reach users quickly. This is the success of DevOps. But security often does not move at the same speed. In many organizations, security reviews are still scheduled monthly or quarterly. Penetration tests require coordination. [...]
Real-time Personally Identifiable Information (PII) Redaction Pipeline with S3 + Lambda + Comprehend
In my previous article, I demonstrated how to use the Amazon Comprehend console to manually detect and redact Personally Identifiable Information (PII) from text files. While this hands-on method is excellent for learning the fundamentals of PII detection, it’s not practical in real-world, high-volume environments where speed and accuracy [...]
Are AI Engineers the New Full-Stack Developers?
Something has been quietly shifting in the tech industry. Job titles that used to sit in completely separate corners of a hiring platform are starting to blur together, and engineers on both sides are feeling it. The full-stack developer who's suddenly expected to integrate LLMs. The AI engineer who's [...]
The “Stateful” Video: Moving from Random Prompts to Semantic Consistency
In the early days of GenAI, creating a video was like launching a Lambda function with no database—every time you ran it, the AI "forgot" what the character looked like, what they were wearing, or even the laws of physics in the previous scene.As we hit 2026, the industry [...]
Reinforcement Fine-Tuning in Amazon Bedrock: A Practical Guide for Enterprise AI
Large language models are powerful, but power alone is not enough for enterprise AI. A model may generate fluent responses, yet still miss your company’s tone, fail structured validation rules, or produce outputs that are technically correct but operationally unusable. The real challenge is not just making models smarter, [...]
Don’t Install OpenClaw! (Unless You Read This First)
If you have been on Twitter, TikTok, or GitHub recently, you have probably seen the hype. Clawdbot (now rebranded as OpenClaw) promises something bold: a self-hosted AI employee that runs on your Mac Mini, has terminal access, and takes instructions through messaging platforms like Telegram. It sounds powerful. It [...]

Path-Based Routing with Application Load Balancer (AWS ALB): Efficiently Directing Traffic Based on URL Paths

An Application Load Balancer enables you to set up a listener with rules that direct incoming requests to target groups based on the URL. This capability is unique to Application Load Balancers and is not offered by other load balancer types like Classic Load Balancer, Network Load Balancer, and Gateway Load Balancer. The path pattern rules only apply to the path of the URL and do not consider the URL's query parameters. Path-based routing [...]

How to Change an AWS ACM Certificate on Amazon CloudFront Distribution

Before diving into the steps on how to change an AWS ACM-generated SSL Certificate, it’s important to understand the basics and benefits of this service. Having a solid understanding will provide context for the actions we are about to take and help us appreciate the value AWS Certificate Manager (ACM) brings to the table. What is the AWS Certificate Manager (ACM)? AWS Certificate Manager (ACM) is a service designed to streamline the provisioning, management, [...]

Real-Time AWS Health Dashboard Updates via Slack Notifications

In an organization or for users that use cloud services, staying updated with the status and health of cloud services is crucial. It's not just about maintaining operational efficiency and minimizing downtime; it's also about peace of mind and ensuring a seamless experience for both the team and customers. The AWS Health Dashboard provides detailed information about the health of AWS services and resources. To ensure timely awareness of any issues or updates, integrating [...]

Automated RDS Snapshot Management for Improved Data Security

The Automated Daily RDS Export ensures that daily snapshots of Amazon RDS instances are created and made shareable. While RDS takes daily snapshots automatically, these are not shareable by default. To address this, we copy the snapshots and share the copies with a designated backup account. This process uses AWS Lambda Functions and Amazon EventBridge to automate the task. EventBridge triggers the Lambda function daily, which handles copying and sharing the snapshots. This automation [...]

Solving HTTP 500 Errors by Increasing File Descriptor Limits

When it comes to web hosting and server management, facing HTTP 500 errors can be a challenging obstacle. Such errors frequently arise from file descriptor limits, which restrict the server's capacity to manage incoming requests efficiently. However, by understanding how to expand these limits, you can reduce the occurrence of HTTP 500 errors and guarantee more seamless operations for your web applications. Raising file descriptor limits helps fix HTTP 500 errors by enabling servers [...]

Exploring C++ with AWS Lambda Custom Runtime

AWS Lambda is a great service for running code without worrying about server management. While it traditionally supports languages like Python, Node.js, and Java, AWS now allows you to run code in any language using custom runtimes. In this blog post, I'll walk you through setting up a C++ Lambda function that calculates the Fibonacci series. We'll leverage the performance and efficiency of C++ to build a function that runs smoothly and showcases the [...]

Automating Slack Notification for Route 53 TTL Changes

Automating a Slack notification system for Route 53 with a 60-second TTL is intended to provide real-time alerts about DNS records with short TTLs. This setup ensures administrators receive quick notifications via Slack, enabling them to promptly identify and resolve potential issues. Through this proactive measure, the optimal performance and reliability of the AWS infrastructure are maintained. Moreover, this approach allows administrators to avoid potential problems by taking corrective actions promptly and minimizing any [...]

Daily AMI Export: Enhancing Backup and Recovery

Daily automation of Amazon Machine Image (AMI) export is vital for keeping IT systems strong and dependable. This process ensures that the latest version of your system's setup is always saved. If something goes wrong, like a system crash, having these up-to-date backups means you can quickly get things back up and running. Additionally, it makes it easier to grow or move your systems because you have readily available copies of machine images. By [...]

AWS Certified Machine Learning Engineer Associate MLA-C01 BETA Exam Guide

The AWS Training and Certification team recently released the new AWS Certified Machine Learning Engineer Associate MLA-C01 exam along with the AWS Certified AI Practitioner AIF-C01 test this June 2024. This new role-based, Associate-level AWS certification exam will allow you to validate your machine learning skills to your current or future employer as well as improve your AI know-how in relation to AWS. You can be among the first-ever batch of IT professionals [...]

New AWS Certified AI Practitioner AIF-C01 BETA Exam Guide

Do you always sharpen your competitive edge in the highly competitive IT industry? Are you planning to position yourself for career growth and reach greater remuneration? Generative AI has been making waves in almost every aspect of the economy and job market to the point that the skills you have today could be worth less, or even worth absolutely nothing by nascent AI-powered tools from OpenAI's ChatGPT, Meta's LLaMa, Google's Gemini and the suite [...]