Raymond Collazo

Docker: From Beginner to Pro

This is a structured introduction to Docker, from first principles to running a real multi-container application. There are fourteen chapters, split into two halves. Part 1. Understanding what Docker is and how it works. Introduction History and Motivation Technology Overview Installation and Setup Using Third-Party Images Container Data and Volumes The Demo Application Part 2. Using it: building, running, securing, and orchestrating a real application. Building Container Images Container Registries Running Containers Container Security Interacting with Docker Objects Development Workflow Deploying Containers 1. Introduction What is Docker? Docker is a platform for packaging, shipping, and running applications in containers. Three verbs, three ideas. ...

A Quick Playbook for Cybersecurity Professionals

For a successful cybersecurity program, it is fundamental to have a coherent operating model: you identify what matters, reduce the most meaningful risks, and prove you can withstand disruption. In practice, that operating model is built on five pillars: Risk Management tells you what to prioritize and why. Cryptography protects data and trust at scale. Business Continuity Planning (BCP) keeps the mission running. Disaster Recovery Planning (DRP) restores systems to agreed targets. Incident Response Planning (IRP) contains damage and learns fast. Let’s walk through each pillar like a practitioner, not a textbook. ...

SRE Operating Models and Organizational Adoption

Customers’ experiences with services are the real measure of how reliable it is. Yet in many IT organizations, development and operations teams have conflicting priorities. One side is rewarded for shipping features quickly, while the other is responsible for keeping systems stable. Site Reliability Engineering (SRE) is the practice of balancing the velocity of feature delivery with the risk to reliability. It is broadly applicable. SRE can benefit IT teams whether they operate in the cloud, on-premises, or hybrid environments, and whether they are working on large initiatives or improving day-to-day operations. ...

A Practical Guide for Modern Organizations

Because we are in a time where data is the lifeblood of the modern enterprise, the ability to withstand and recover from disruption is no longer just an option, it is a fundamental principle of information integrity. More often, organizations fail because they where unprepared for the medium-sized incidents: a cloud outage during payroll week, a ransomware event that freezes scheduling, a vendor breach that leaks credentials, or an AI tool that quietly exposes sensitive data. The good news is that resilience is a skill that can be built systematically, through contingency planning, business continuity planning, and a clear approach to cybersecurity including AI. This blog explores the vital intersection of these three pillars and how they form the backbone of organizational resilience. ...