Tech Blogs - Tutorials Dojo

AWS Certified Generative AI Developer Professional Study Path
AWS has just unveiled the newest AWS Certified Generative AI Developer – Professional certification. This important credential is for developers and AI professionals who want to advance their careers by building, deploying, and improving high-quality generative AI applications on AWS. This certification confirms your skills in using foundation models [...]
Don’t Struggle with Kaggle: Build your First Data Science Project!
Are you a beginner wanting to start your very first data science or machine learning project, but don’t have the right hardware or enough storage capacity? Well, Kaggle is the perfect platform to start your journey! What is Kaggle? Kaggle is a powerful web-based platform that provides opportunities for [...]
Tech Burnout: Is It Really Inevitable?
What if the dream job, the one you've always been dreaming of and manifesting ever since, is quietly draining the life out of you? This exhaustion is a known feeling in the tech industry, where the relentless pressure forces professionals and students to push until they hit a wall. [...]
Rise of Microservices in Modern Apps: From One Block to Many
Have you ever thought about the pain of fixing just one small piece of a massive software system without accidentally breaking everything else? Honestly, most of the time, that is almost impossible. That challenge led to the rise of microservices in modern apps. It marked a shift from old [...]
High-Performing ≠ Massive: The Rise and Progression of Small Language Models (SLMs)
Have you ever needed to find a new charger for your device, only to discover that its voltage wasn’t compatible, causing it not to work or even risking damage? Without checking the actual needs of your device, you’ve probably thought that you could go with what the seller recommends [...]
Data Preprocessing Guide for Beginners in ML
Before machine learning (ML) models can generate predictions or insights, the raw data must first be cleaned, organized, and transformed into a suitable format for the model. This process is known as data preprocessing. It is the foundation of every successful ML project. It ensures that the model learns [...]
The Future Is Containerized: Why Every Cloud Engineer Should Care About Docker in 2025
In 2025, software development is moving faster than ever. Businesses demand speed, reliability, and scalability. Cloud infrastructure is no longer optional — it’s the backbone of modern applications, powering everything from streaming platforms like Netflix to AI-driven fintech solutions. In this fast-paced environment, one technology has emerged as a [...]
Chips & Brains: The Psychology of Human-AI Decision Making
Your smartphone just recommended the perfect restaurant, your GPS avoided traffic seamlessly, and your bank approved a loan in seconds—all without human intervention. The speed at which AI operates is awe-inspiring. Yet when the same AI suggests a medical treatment or hiring decision, we suddenly hesitate. This contradiction reveals [...]
Prevent EC2 Downtime: Setting Up Status Check Alarms to Auto-Reboot an Amazon EC2 Instance
When you’re running a production website on an EC2 instance, the last thing you want is for it to unexpectedly go down while you’re focused on other tasks. Without the right monitoring in place, you might not even realize your site has been offline for a while, and repeated [...]
Securing Your Website in Containerized Applications: A Step-by-Step Guide to Setting-up HTTPS
So, you have just deployed your first app to the cloud (maybe you have followed the tutorial that we have for deployment insert link here), it’s running great, you have your users now, but then you noticed that little “Not Secure” warning in the browser. Suddenly, your app looks… [...]

Google Veo 3: The Latest Breakthrough in AI Video Generation

Artificial intelligence has come a long way from its early days when it could only do simple tasks like solving math problems, playing basic games, or following step-by-step instructions from programmers. Back then, AI relied on fixed rules and couldn’t learn or improve on its own. As technology advanced, AI became more capable and useful. It learned to recognize voice commands, identify faces, suggest videos based on viewing habits, and learn patterns from data. [...]

Why I Chose AWS Lambda to Power My App’s Cloud Logic

For this article, I will demonstrate how I used AWS Lambda as an all-around backend system for a mock-up mobile application I developed for my Design subject in school. The mobile application is an IoT application that integrates communication between a mobile device and a handheld barcode scanner using a Bluetooth module. It also includes security functions, such as code decryption and user statuses. For the dependencies, I used flutter_blue, get, and http. The [...]

What is Area Under the ROC Curve (AUC) in Machine Learning?

Area Under the ROC Curve (AUC) Cheat Sheet AUC, short for Area Under the Curve of the Receiver Operating Characteristic (ROC), is a metric that evaluates how well a model can differentiate between different classes. A performance metric primarily used for binary classification models. Ranges from 0 to 1: 1: Perfect model. 0.5: Model performs no better than random guessing. 0: Model inversely ranks positives and negatives. Accurate Outcomes True Positive (TP): The model [...]

What is BiLingual Evaluation Understudy (BLEU) Score for Machine Translation?

BiLingual Evaluation Understudy (BLEU) Score Cheat Sheet BLEU (BiLingual Evaluation Understudy) is a corpus-level metric designed to automatically evaluate the quality of machine-generated text, most commonly in machine translation (MT). It compares n-gram overlap between the machine’s output and one or more human reference translations. Introduced by Papineni et al. (2002), BLEU became the first automated metric to correlate highly with human judgments in large-scale MT evaluations. It remains a widely used baseline for evaluating [...]

What is RLHF – Reinforcement Learning from Human Feedback?

What is Reinforcement Learning from Human Feedback (RLHF)? A technique to improve AI models using human feedback to guide learning. Builds on reinforcement learning, where AI learns by trial and error to achieve goals. Uses human opinions to determine good or bad outputs, enhancing traditional reward systems. How RLHF Works Data Collection: AI generates multiple outputs (e.g., answers or text snippets). Humans provide feedback by ranking or comparing outputs (e.g., which is better or [...]

AI Learning Simplified: Three Methods That Make Machines Smart

Let’s be honest, in recent years, you might have heard of Artificial Intelligence (AI) a million times in your day-to-day life—but have you ever stopped to wonder, how does AI learn to do all the things it can? From writing essays to driving cars and even powering robots, AI has gone from a distant dream to a constant companion. In fact, many assumes that AI is created with magic that could automatically build itself [...]

Renovate Your Second Home: Terminal with Amazon Q

For many developers, the terminal is not just a tool to make you look cool but it is a sanctuary. It deserves the title "A Developer's Second Home." Here, we build what we want, everything flows freely, and productivity reigns. However, comfort doesn't mean we can't tinker and upgrade it. In this blog, we'll explore how Amazon Q can renovate our sanctuary to make life easier. We need to improve our terminal experience from simple [...]

Cloud-9.9: Using Amazon CloudFront for Your Site in Amazon EC2

Hey, this is Step 9 of our 9-step website portfolio building with AWS! Got lost? Click here to go to the main article, and here for the eighth step! In this final step of the series, we’ll guide you through integrating Amazon CloudFront, a global Content Delivery Network (CDN), with your WordPress website hosted on Amazon EC2. Amazon CloudFront will help accelerate content delivery, reduce latency, and enhance the overall performance and security of [...]

Understanding F1 Score in Machine Learning

In machine learning, evaluating the performance of a model is essential to ensure its effectiveness and reliability. Among various metrics used for classification problems, the F1 Score is one of the most important and widely used. This metric helps assess the balance between precision and recall, providing a score reflecting the model's accuracy and ability to identify relevant instances. What is the F1 Score? The F1 Score measures a model's accuracy, the harmonic mean [...]

Smart Note-Taking with NotebookLM – AI Assistant for Your Ideas

Have you ever found yourself staring at a blank screen at 10 p.m., with a deadline looming and a mountain of notes scattered across your desktop? We’ve all been there! Wishing upon a shooting start that our research could magically organize itself and whisper the answers straight into our ears. But what if your notes could not only talk back but also help you brainstorm, summarize, and even turn dense research into a podcast-worthy [...]