Tammy is a UX researcher, writer, and speaker who has spent more than two decades studying how people use the web. Her focus is the intersection of performance, user experience, and business outcomes. She's helped some of the biggest companies in the world – from Amazon to Zillow – deliver fast, joyous experiences to their users. Tammy is the author of 'Time Is Money: The Business Value of Web Performance' (O’Reilly) and co-chair of the annual performance.now() conference.
Ask an SRE what "reliability" means and you'll get a pretty consistent answer. It means uptime, latency SLOs, error budgets, on-call rotations, and someone's pager going off during a dinner party. (I know, no one carries pagers any more. I’m just enjoying an anachronistic moment.)
None of that is wrong. But it's incomplete, and that incompleteness may be hurting your users and your business.
Get these fundamentals right and synthetic monitoring stops being a dashboard you check occasionally and becomes an early warning system that catches performance issues before they hit your users.
Core Web Vitals transformed how entire organizations think and talk about web performance. Mobile deserves an equivalent framework — one that's rigorous, user-focused, and tied to real business outcomes. We're building it. Here's how.
If you want to get the attention of non-technical stakeholders, these are the three most powerful charts to immediately grab folks' interest and get them to care about site speed and user experience.
