This document discusses GOV.UK and how it communicates information at scale to meet user needs. It describes how GOV.UK publishes over 70,000 pages from 1,000 organizations, with 145 new pages added daily. It also discusses using collaboration and email notifications to keep users informed about updated content relevant to their interests, with over 250,000 subscribers receiving 20-30 million messages monthly. The goal is to provide useful information to users while minimizing irrelevant messages.