## about this topic
The web is the largest software platform in the world, and APIs are the glue connecting everything on it. This hub concentrates the CodeCrush articles on web development and integrations: the fundamentals of HTML, CSS and JavaScript, frameworks such as React, best practices for REST APIs, and practical guides to public APIs (Google Maps, social networks and others) you can integrate into your projects today. We also maintain a catalogue of public APIs to explore. The articles run from the frontend — interfaces, accessibility, performance — to the backend of integrations: authentication, rate limits and versioning. If you build for the web, this hub is your index.
## all articles
Articles about Web Development and APIs
- Infrastructure and DevOps
MySQL: the relational database of the modern web
MySQL is the most used open source RDBMS on the web and the 2nd most popular database in the world (DB-Engines, 2026), the base of sites, e-commerce and SaaS.
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Henrico - Programming
Plugin Development: How to Extend Software
A plugin is a module that adds functions to an application via APIs and extension points, without changing the source code. See types, advantages, and how to create one.
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WebSockets: real-time bidirectional communication on the web
WebSocket is a protocol that keeps a persistent, full-duplex TCP connection between client and server, the foundation of chats, games, and real-time dashboards.
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Modern Web Development: Architectures and Methodologies
Modern web development combines architectures like microservices and serverless with agile practices and DevOps to create scalable, secure applications.
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Google Maps API: What it is, how to implement it, and how much it costs
The Google Maps API lets you embed interactive maps, routes, and geolocation in websites and apps; it requires an API key and offers 10,000 free calls per month.
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Facebook Graph API: what it is and how to implement
The Graph API is Meta official HTTP interface for reading and publishing Facebook data. See how to register the app, authenticate users and make calls.
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How to Get Started with React: A Step-by-Step Guide for Beginners
React is the most used JavaScript library for building web interfaces. Learn to create your first app with Node.js, npx, and Vite step by step.
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How to integrate MongoDB with Next.js: a step-by-step tutorial
Learn to integrate MongoDB with Next.js using the official with-mongodb example: create the app, configure MONGODB_URI, and deploy to Vercel.
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PHP: what it is, what it is for, and how to get started in the language
PHP is an open-source language for web development that runs on 71.8% of sites with a known server-side language (W3Techs, 2026).
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What is CSS? A guide to the web styling language
CSS (Cascading Style Sheets) is the language that defines colors, typography, and layout of HTML pages, used by 62% of devs according to Stack Overflow.
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Distributed DNS: why the internet has no central server
DNS is distributed to eliminate single points of failure: 13 root servers with more than 2,000 instances keep the internet running even under attack.
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What is SMTP: the essential email sending protocol
SMTP (Simple Mail Transfer Protocol) is the standard protocol that transfers emails between mail servers over TCP on port 25, defined in RFC 5321.
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Semantic HTML: what it is, tags and how it improves SEO
Semantic HTML uses tags like header, nav, main and article to describe the meaning of content, improving accessibility, SEO and machine readability.
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Network Communication: Protocols, the OSI Model, and TCP/IP
Network communication is the exchange of data between devices governed by protocols. Learn the 7-layer OSI Model, TCP/IP, and service models.
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5 Sites to Learn CSS by Playing: Flexbox and Grid
Flexbox Froggy, Flexbox Zombies, Grid Garden, Flexbox Defense and Grid Critters teach CSS Flexbox and Grid with interactive browser games.
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Framework: what it is, how it works, and which to choose in 2026
A framework is a reusable code structure that standardizes and accelerates software development. See the types, examples, and how to pick yours.
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Metaverse: what it is, how it works and the future of the internet
The metaverse is a shared 3D virtual space that combines virtual reality, augmented reality and blockchain so people can interact, work and trade online.
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Henrico & Renata