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Terraform & AWS DevOps Mastery

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Remote State & Bootstrapping the AWS Landing Zone

Remote State & Bootstrapping the AWS Landing Zone By default, Terraform stores the mapping between your local code files and real-world AWS infrastructure in a local file called terraform.tfstate. In a team setting or pr…

May 21, 20265 min read

Designing a Production-Grade AWS VPC from Scratch

Designing a Production-Grade AWS VPC from Scratch A Virtual Private Cloud (VPC) is the logical network boundary for all your cloud resources. By default, AWS provides a "Default VPC" in every account. However, default VP…

Securing Subnet Access with NAT Gateways and Security Groups

Securing Subnet Access with NAT Gateways and Security Groups In our previous lesson, we designed a multi-AZ VPC with segregated public, private, and database subnets. However, our stateless backend applications sitting i…

May 21, 20265 min read

IAM Least Privilege: Roles, Policies, and OIDC

IAM Least Privilege: Roles, Policies, and OIDC Authentication and Authorization are the ultimate guardrails of cloud infrastructure. In AWS, this is governed by Identity and Access Management (IAM). Historically, develop…

May 21, 20265 min read

The Anatomy of a Production Terraform Module

The Anatomy of a Production Terraform Module As your infrastructure grows, copy-pasting resource definitions across different microservices or environments becomes unsustainable. If you have 20 services, and each require…

Secrets Management: AWS Secrets Manager & KMS Integration

Secrets Management: AWS Secrets Manager & KMS Integration One of the most common causes of corporate data breaches is the hardcoding of API keys, database passwords, and TLS private keys inside source code. In a Terrafor…

High-Availability Relational Databases: RDS Multi-AZ Setup

High-Availability Relational Databases: RDS Multi-AZ Setup Databases represent the state and source of truth of your entire application platform. If a web server goes down, you spin up a new container in seconds. If your…

May 21, 20263 min read

Containerized Microservices on AWS ECS Fargate

Containerized Microservices on AWS ECS Fargate Modern application scaling requires isolated, repeatable containerized deployments. While managing AWS EC2 virtual machines directly gives you control, it introduces signifi…

High-Availability Load Balancing & Auto-Scaling

High-Availability Load Balancing & Auto-Scaling In our previous lesson, we successfully provisioned stateless AWS ECS Fargate containers running our backend application inside private subnets. However, because these cont…

GitHub Actions Pipeline: Automated Plan & Apply Workflows

GitHub Actions Pipeline: Automated Plan & Apply Workflows In a collaborative engineering organization, running terraform apply directly from a developer's local laptop is an anti-pattern. If an engineer applies changes l…

Drift Detection, State Surgery, and Refactoring

Drift Detection, State Surgery, and Refactoring No matter how disciplined your team is, reality eventually drifts from your codebase. During high-severity production incidents, an engineer might log into the AWS Manageme…

DevOpsExpert

Capstone: Zero-Downtime Blue-Green Infrastructure

Capstone: Zero-Downtime Blue-Green Infrastructure Congratulations on reaching the final capstone project of the Terraform & AWS DevOps Mastery track! Throughout this course, you have designed networks, secured credential…

PlaybookGit & GitHub Mastery Course

Git & GitHub Mastery: The Team Collaboration Playbook — Branching Strategies, PR Workflows, and Release Engineering

Mental Model > Git is a communication protocol as much as it is a version control system. Your branching strategy determines how fast your team ships, how easy incidents are to diagnose, and how often engineers block eac…

May 15, 20269 min read

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Git Internals: How Objects, the DAG, Packfiles, and the Reflog Actually Work

The Four Objects That Are All of Git Mental Model > Git is not a "file versioning system." It is a content-addressable filesystem with a version-control interface on top. Once you understand the object model, every Git c…

May 15, 20269 min read

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DevOpsIntermediate

Git & GitHub: Writing Commit Messages That Document Your Engineering Decisions

Mental Model > Your Git history is the only documentation that is guaranteed to be up-to-date. Architecture docs go stale, wikis get abandoned, Confluence pages rot. Every commit you make is a permanent, searchable recor…

May 15, 20269 min read

#devops#git#collaboration

DevOpsBeginner

Git Architecture & Fundamentals

Git Architecture: The Three Areas Mental Model > Connecting isolated components into a resilient, scalable, and observable distributed web. To understand Git, you must understand the three states that a file can reside i…

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DevOpsBeginner

Mastering Branching & Merging

Branching & Merging: Parallel Universes Mental Model > Connecting isolated components into a resilient, scalable, and observable distributed web. In Git, a branch is simply a movable pointer to one of your commits. The d…

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DevOpsIntermediate

GitHub & Remote Collaboration

Remote Repositories: The Source of Truth Mental Model > Connecting isolated components into a resilient, scalable, and observable distributed web. Remote repositories are versions of your project that are hosted on the I…

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DevOpsIntermediate

Professional Collaboration Workflows

Team Collaboration: Pull Requests & Reviews Mental Model > Connecting isolated components into a resilient, scalable, and observable distributed web. A Pull Request (PR) is a request to merge your changes into a branch.…

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Advanced Git: Rebase, Stash & Hooks

Advanced Git: The Power User Toolbox Mental Model > Connecting isolated components into a resilient, scalable, and observable distributed web. Rebase vs. Merge - Merge: Non-destructive. Preserves history but can be messy…

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Debugging History & Recovering Commits

Debugging & Fixing Production Issues Mental Model > Connecting isolated components into a resilient, scalable, and observable distributed web. Finding the Culprit - git blame: Shows who changed each line of a file and wh…

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Terraform for Backend Engineers: Managing Your Own Infra

Terraform for Backend Engineers Mental Model > Connecting isolated components into a resilient, scalable, and observable distributed web. In modern engineering teams, the boundary between "Code" and "Infra" is blurring.…

Apr 20, 20266 min read

#aws#devops#terraform

Terraform Infrastructure as Code: Production Patterns and Pitfalls

Terraform is the industry-standard tool for Infrastructure as Code (IaC) — defining cloud infrastructure as declarative HCL configuration that can be version-controlled, reviewed, and applied reproducibly. The value prop…

May 14, 20258 min read