Tech Blogs - Tutorials Dojo

Automating Publications with Claude, Canva, and n8n
Every business that runs a social media page knows the same repetitive cycle. Pick a topic. Write a caption. Design a graphic. Post it on schedule. Repeat tomorrow. Multiply that by every campaign, every seasonal push, every recurring content series, and it becomes a real operational cost, not just [...]
AI Ethics Explained: How to Use Artificial Intelligence Responsibly
Have you ever used ChatGPT to help explain a difficult topic? Maybe you've asked Gemini to summarize a lengthy article, generate ideas for a school project, write an email, or even use Claude for brainstorming concepts. If you're a student, you've probably wondered: "Is it okay to use AI [...]
Fine-tuning an LLM for natural Tagalog speech
If you're an ML engineer or a technical lead planning to pre-train a large language model (LLM) for Tagalog or Taglish, how do you start? In this article, we walk through the process of defining a target voice, building a data pipeline, running a QLoRA training experiment, and evaluating [...]
Building Diffender: A Serverless AI Security Reviewer for GitHub Pull Requests with Amazon Bedrock
A pull request can pass its tests, satisfy its acceptance criteria, and still expose a production credential in one line of code. Diffender is an Amazon Bedrock pull request reviewer built to identify that kind of risk before the change reaches the main branch. However, human review remains essential, [...]
AWS Certification Maintenance: Recertify Without an Exam
Many AWS-certified professionals face the same challenge every few years: preparing for another certification exam while balancing work, projects, and personal commitments. While certifications remain a valuable way to validate cloud expertise, the traditional recertification process can be time-consuming and stressful. To address this, AWS has introduced a new [...]
CCDV-F Claude Certified Developer Foundations Study Guide
Bookmarks CCDV-F Exam Domains CCDV-F Study Materials Claude Features to Focus On Key Exam Topics by Domain Important Skills Validate Your Readiness Final Remarks The Claude Certified Developer – Foundations (CCDV-F) certification is designed for technical professionals who build, [...]
CCAR-P Claude Certified Architect Professional Study Guide
Bookmarks CCAR-P Exam Domains CCAR-P Study Materials Claude Features to Focus On Key Exam Topics by Domain Important Skills Validate Your Readiness Final Remarks The Claude Certified Architect – Professional (CCAR-P) certification is designed for experienced professionals who build [...]
CCAO-F Claude Certified Associate Foundations Study Guide
Bookmarks CCAO-F Exam Domains CCAO-F Study Materials Claude Features to Focus On Key Exam Topics by Domain Important Skills Validate Your Readiness Final Remarks The Claude Certified Associate – Foundations (CCAO-F) certification is designed for professionals who use Claude [...]
CI/CD Crash Course: From Junior to Senior Developer
Continuous Integration and Continuous Delivery/Deployment (CI/CD) is the backbone of modern software teams. It's not just a buzzword for your resume — it's the automated pipeline that takes code from "it works on my machine" to "it works in production, reliably, every time." Understanding CI/CD deeply, not just using [...]
Everything You Need to Know About Harness Engineering
AI agents can now write code, browse the web, and run for hours without a human watching. Ask one to build a feature, and it might open ten files and call five tools. It can make a hundred small decisions before it ever shows you a result. That is [...]

Default Host Management Configuration on AWS Systems Manager

AWS Systems Manager’s Fleet Manager is a useful tool for managing Amazon EC2 instances on your account. It allows you to establish a private session to your instances, view detailed information about the instance, run automation such as patch installations, or execute specific Run commands to the instance’s operating system. It can also be used to manage on-premises servers or virtual machines. Using AWS Systems Manager tools requires that an IAM role is created [...]

My DVA-C02 AWS Developer Associate Exam Experience

A few weeks ago, I took and passed the latest AWS Certified Developer Associate exam, DVA-C02. If you've already cleared DVA-C01 and intend to recertify, note that you can no longer book DVA-C01 exams. I suggest checking out this article I wrote a couple of months ago. This breaks down the changes you need to be aware of, and I’ve also shared my expectations for the DVA-C02 exam. In this post, I'll be sharing [...]

Customize Your Invite Links with Amazon S3 Website Redirect

If you use Discord, Slack, or Telegram, you're probably familiar with those long and complicated invite links used to join servers or channels. These links can be difficult to remember and may even discourage some people from joining. With URL redirection, you can create a custom and easy-to-remember domain name for your invite links. For example, you might use a domain like "discord.mycoolsite.com" that redirects to the invitation page of your Discord server, which [...]

Using Amazon Route 53 Resolver

In the previous blog post, we talked about Split-view DNS using Amazon Route 53, in which the DNS server gives out a different response to the same DNS query based on where the query came from. This is helpful if you are in a hybrid environment when you want an internal application to resolve a domain from a private hosted zone and external applications to resolve from a public hosted zone in Route 53. [...]

Is a Cloud Computing Career Still Worth Pursuing in 2023?

Cloud computing has remained a hot topic in the IT field for the past years, gaining even more attention during the height of the COVID-19 pandemic. Between 2020 and 2021, there’s been a burst of cloud adoption from startups, mid-sized businesses, and even large enterprises as they looked for ways to adapt to remote work and digital operations. And it's no wonder, given the benefits it offers over traditional on-premises solutions, like more flexibility [...]

7 Most In-Demand IT Skills for 2023

Every day the growth of technology is exponential, there will come a time when the technology you've just learned will be obsolete. If you’re currently exploring opportunities in the IT industry, we’re gonna tackle the article provided by Indeed about the best IT jobs for the year 2023. Below, you'll find information that reflects the current trends and offers a chance to explore new career paths. Despite the anticipated advancements in technology, our objective [...]

Using Origin Access Control (OAC) to Secure S3 Object Access to CloudFront

What is Amazon S3 Object Access? Amazon S3 is one of the most popular AWS service organizations use, as it offers industry-leading scalability, data availability, security, and performance for object storage. S3 is utilized to store and protect any amount of data for a range of use cases, such as data lakes, websites, mobile applications, backup and restore, archive, enterprise applications, IoT devices, and big data analytics. One of the frequent use cases of [...]

AWS Certified Cloud Practitioner CLF-C01 Exam Domains

Amazon Web Services began its Global Certification Program in 2013 with the primary purpose of validating the technical skills and knowledge of IT Professionals in building secure and reliable cloud-based applications using the AWS Cloud. On April 2013, AWS launched its first-ever AWS Certification test called the AWS Certified Solutions Architect Associate exam. This was followed by the AWS Certified SysOps Administrator and AWS Certified Developer Associate exams. Amazon has been continuously expanding and [...]

Retrieving Parameter Values from SSM Parameter Store through AWS Lambda

In today's world, serverless computing is gaining popularity as it offers technologies for running code, managing data, and integrating applications, all without managing servers. It eliminates the infrastructure management tasks so developers can focus on application development. One of the requirements of serverless development is storage for configuration data management and secrets management. Developers need to store data such as passwords, database strings, etc., at some point. Luckily, Parameter Store, a capability of AWS [...]

Secure EC2 Instances Connections Leveraging Session Manager

As more workloads are being migrated to the cloud, security should always be a top priority. Some organizations fail to consider security and therefore paid the price of having their workloads compromised. For example, an EC2 instance that has its SSH inbound port open to the world, therefore, providing unrestricted access to attackers globally. Luckily, AWS has a service that allows you to connect to your EC2 instances without opening any inbound port, eliminating [...]