Short answer: Speed matters because slow pages create friction before the message has a chance to work. It is one part of search quality rather than a substitute for relevant content, and its commercial importance depends on how much it affects real users and conversions.
What usually matters most
Mobile visitors on inconsistent connections are often the most exposed to heavy images, excessive scripts and delayed interaction. Improving the critical path can reduce abandonment and make paid and organic traffic more valuable.
A perfect laboratory score is not the business objective. Prioritise measurable user experience, Core Web Vitals in field data, stable page behaviour and the speed of revenue-critical templates such as service, product, cart and enquiry pages.
A practical way to decide
- Test important templates on mobile, not only the homepage.
- Compress and correctly size images without making them visibly poor.
- Reduce unnecessary plugins, scripts, fonts and third-party tags.
- Compare speed improvements with engagement and conversion data.
Good fit: SC Web is worth considering when performance work needs to support SEO, advertising and conversion rather than chase a score in isolation.
Probably not a fit: It may not be useful if the site is already fast for real users and more important offer or tracking problems remain.
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