Skip to content
tezvyn:
Menu

☁️DevOps & Cloud

Infrastructure, containers, CI/CD, and cloud

304 bites

Test yourself: Top 30 easy DevOps & Cloud interview questions →Multiple choice, with the correct answer and why it is correct on every question. Free, no sign-in.

Easy everything in DevOps & Cloud, page 12

easy2 min read

Cloud Business Case: Justifying Your Move to the Cloud

A cloud business case translates technical goals into financial terms like ROI and TCO to win executive support. It's the "why" and "how much" for a migration, used to secure budget and sponsorship.

AWS Well-Architected Framework: A Blueprint for Cloud Health
easy2 min read

AWS Well-Architected Framework: A Blueprint for Cloud Health

Think of it as a pre-flight checklist for your cloud architecture. It provides a consistent way to evaluate your systems against six pillars—like security and cost optimization—to ensure they are sound.

The 6 R's: Your Playbook for Cloud Migration
easy2 min read

The 6 R's: Your Playbook for Cloud Migration

The 6 R's are a strategic menu for migrating apps to the cloud. When planning a move, you use it to decide whether to simply 'Rehost' an app, 'Refactor' it for performance, or even 'Retire' it.

easy2 min read

Cloud Adoption Framework: Your Org's Cloud Migration Playbook

A Cloud Adoption Framework (CAF) is an organization's pre-flight checklist for moving to the cloud. It provides a structured path for strategy, planning, and governance, ensuring alignment during a large-scale migration.

easy2 min read

Cloud Computer Vision: Renting an AI's Eyes via API

Think of it as an API that lets your app 'see.' You send an image and get back structured data like object labels or text. It's used for content moderation, digitizing documents, or making photo libraries searchable.

easy2 min read

Cloud NLP Services: Pre-trained Language Models as an API

Cloud NLP services are like having a team of linguists on-demand via an API. Use them to instantly analyze text for sentiment, entities (people, places), or topics without building your own models.

easy2 min read

Pre-trained AI Services: Renting Expertise, Not Building It

Pre-trained AI services are like renting an expert's brain via an API. Instead of training your own model, you call a service for tasks like speech-to-text or image analysis. The footgun is assuming a general model will master your specific industry jargon.

easy2 min read

AutoML: Automating the Machine Learning Workflow

AutoML automates the repetitive, trial-and-error parts of building a machine learning model, like picking the best algorithm and tuning its settings. Use it to quickly build baseline models or when your team lacks deep ML expertise.

easy2 min read

Managed ML Platforms: Heroku for Machine Learning

A managed ML platform is like Heroku for machine learning, providing an integrated environment for the entire model lifecycle. Use it to build, train, and deploy models without managing servers, data pipelines, or inference endpoints yourself.

Batch vs. Stream Processing: When to Process Data
easy2 min read

Batch vs. Stream Processing: When to Process Data

Batch processing is like a nightly report, crunching a full day's data at once. Stream processing is a live feed, handling events as they arrive. Use batch for ETL jobs and stream for real-time fraud detection.

easy2 min read

MapReduce: Divide and Conquer for Big Data

MapReduce breaks a huge data job into smaller, parallel tasks across a cluster. It's ideal for batch processing massive datasets, like indexing the web. The common footgun is using it for real-time queries; it's built for throughput, not speed.

Cloud Budgets: Your Guardrail Against Overspending
easy2 min read

Cloud Budgets: Your Guardrail Against Overspending

A cloud budget is a spending alarm for your cloud account. It warns you when costs approach a limit you've set, preventing surprise bills. Use it to track monthly spend or monitor usage. The main footgun: billing data lags, so you can overspend before an.

AWS Cost Explorer: Visualize and Forecast Your Cloud Spend
easy2 min read

AWS Cost Explorer: Visualize and Forecast Your Cloud Spend

Cost Explorer is your cloud bill's interactive dashboard, turning raw data into trend graphs and forecasts. Use it to find which service is driving up costs or to predict next quarter's bill. The main footgun: once enabled, it cannot be disabled.

Consolidated Billing: Combine Cloud Bills for Bigger Discounts
easy1 min read

Consolidated Billing: Combine Cloud Bills for Bigger Discounts

Consolidated Billing is like a family phone plan for AWS accounts. It rolls multiple accounts into one bill, letting you share volume and savings plan discounts across the entire organization.

easy2 min read

Centralized Logging: A Universal Inbox for Your Systems

Centralized logging is a universal inbox for all your system events. Instead of SSHing into each server, agents forward logs to one searchable location, making it possible to debug issues that span multiple services. The footgun is inconsistent log formats.

easy2 min read

Dead-Letter Queues: A Message Queue's Lost-and-Found

A Dead-Letter Queue (DLQ) is a message queue's lost-and-found, catching messages that can't be delivered. It's used to isolate "poison pill" messages that crash consumers or messages that have expired.

Serverless Cold Starts: The Price of 'Pay-per-Use'
easy2 min read

Serverless Cold Starts: The Price of 'Pay-per-Use'

A serverless cold start is the initial delay when a function boots from scratch, like waking a computer from being off versus asleep. It happens on the first request or after inactivity.

API Gateway: The Front Door for Your Microservices
easy2 min read

API Gateway: The Front Door for Your Microservices

An API Gateway is the single front door for all your backend services. It handles tasks like authentication and rate limiting before routing requests to the correct microservice. The footgun is treating it as a simple proxy; it can become a bottleneck.

Docker Engine: Shipping Your Code in a Standard Box
easy2 min read

Docker Engine: Shipping Your Code in a Standard Box

Think of Docker as a standard shipping container for your code. It packages an app and all its dependencies into one unit that runs anywhere, solving the classic "it works on my machine" problem. The footgun is confusing it with a full VM; it's lighter.

Containerization: Packaging Apps to Run Anywhere
easy2 min read

Containerization: Packaging Apps to Run Anywhere

Think of a container as a standardized box for your app, bundling its code and all dependencies. This ensures it runs the same everywhere, solving "it works on my machine" problems. The footgun is confusing them with VMs; containers are less isolated.

We are hiring for this. Every open role lists the topics its interview covers, so you can prepare for the real thing rather than guessing.

See open roles