A Magento 2.3 upgrade starts before the update command
Magento’s 2.3 CLI guidance calls out dependency changes. Review the extensions and libraries before attempting the upgrade on a copy of your store.
THE NOESIS JOURNAL
November 2018
Read the article: A Magento 2.3 upgrade starts before the update command
Your PageSpeed score changed. Did the website change too?
PageSpeed Insights now uses Lighthouse. Read a controlled test and real-user history as different kinds of evidence before setting the next task.