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Accessibility work focuses on making a site parse correctly for assistive technology such as screen readers. Writing descriptive alternative text for images, maintaining sufficient contrast, and using a semantic heading hierarchy are among the most common improvements.

A content delivery network places cached copies of static assets on servers in many geographic locations, bringing them closer to visitors. For sites with heavy images, video, or stylesheets, a CDN can noticeably reduce the time it takes for the first screen to render.

Responsive design requires a single set of pages to display correctly across screen sizes. Elastic layouts, media queries, and relative units are the usual tools, and avoiding fixed pixel widths prevents the horizontal scrolling that plagues poorly adapted mobile pages.

The first step in web performance work is identifying the bottleneck. Browser developer tools expose the timing, size, and blocking behaviour of every request, which makes it possible to target compression, caching, or deferred loading of non-critical scripts instead of guessing.

Cloud computing abstracts computing resources into services that can be rented on demand. Rather than purchasing servers in advance, a business can scale capacity with traffic, which substantially lowers the fixed costs and technical barriers faced by early-stage companies.