The first time I dropped our partner accounts table into a Home page sidebar, the company names came out as “Harbo…” and the revenue as “$126,0…”. The page saved, activated and looked broken. Nothing in the builder warns you about that.
A custom home page in Salesforce Lightning is a Lightning page of type Home Page that you build in Lightning App Builder and assign to the whole org, one app, or an app and profile combination. Here are the eight rules our team follows, tested in a Winter ’27 Developer Edition org on a page called Ridgeline Sales Home, plus examples by role and the safe way to delete one.