“Guaranteed within 24h” means that we will deploy, setup and configure a brand new Sentinel instance within your Azure tenant within 24h, 365 days a year, including the connection of all possible Microsoft Data Sources with respective Analytic Rules, Playbooks and Dashboards also known as Workbooks. Obviously, this only works if customers are available on short notice too and ideally started preparing the basics as laid out on the Rapid Sentinel Deployment page (link see below).