Multi-Site Management
Also known as: fleet management, portfolio management
Looking after many client sites at once without the work growing in step with the client count.
Two client sites you manage by remembering. Twenty you cannot, and that gap is where most small shops stall.
Managing many sites well means one change can reach all of them, one check can test all of them, and one report can be produced for any of them without a custom effort.
Sameness is the whole trick. Twenty sites built twenty ways cannot be managed together no matter what software you buy, because the differences are in the sites rather than in the tool.
This is the argument for picking a build you will repeat, even when a one off would be slightly better for one client.