The article provides guidance on modern web development practices, covering key topics such as performance optimization, responsive design, accessibility, and security. It offers practical advice for building fast, user-friendly, and maintainable websites using current web standards and tools.
Background
- The "Modern Web Guidance" is a set of principles from UK.GOV's Central Digital and Data Office (CDDO) for building government digital services. It was published in 2025 after a policy shift away from JavaScript-heavy single-page apps.
- It mandates "progressive enhancement": start with server-rendered HTML that works without JavaScript, then add interactivity only where needed. This rejects the default use of frameworks like React, Vue, or Angular.
- The guidance responds to expensive UK public-sector tech failures (e.g. NHS Digital, Universal Credit IT). The Government Digital Service (GDS) has long pushed for simpler, more resilient architecture, and this guidance doubles down on that philosophy.
- Key reasoning: JavaScript-heavy sites fail users with slow connections, older devices, or assistive tech. Government has a duty to serve everyone equally, so accessibility and robustness trump developer convenience.
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