如何向客户部署和管理C＃Web应用程序，与基础项目有一些细微差别？

I have a semi-large web application that we run locally and I need to deploy it at another location. The second location will require some slight modifications to the project (especially cosmetic). How do you manage these differences and what do you use to distribute the site and updates to a customer like this?I have a semi-large web application that we run