Structure in git with multiple websites

Question

I have a website that i keep in git. It is a asp.net webforms website (but that is probably unimportant to this question).

The website is used by our customer for 2 (in

Answer 1

I might make separate "Site" and "Common" directories, with "Common" containing symlinks at strategic points and one or both a submodule, like so:

 Project
 |==.git
 |--Site
 |  |--.git
 |  \--Website
 |     |--Styles
 |     \--web.config
 \--Common
    |--.git
    |--BackOffice
    |  \--UI
    |--BackOffice.UI
    |  \--WebControls
    |--BackOfficeTests
    |--Deployment
    |  \--db
    |--BusinessLogicLayer
    |  |--bin
    |  |--obj
    |  \--Properties
    |--scripts
    \--Website
       |--admin
       |--App_Browsers
       |--App_Code
       |--App_Data
       |--Styles -> ../../Site/Website/Styles
       \--web.config -> ../../Site/Website/web.config

That's not the only layout that would serve -- for instance, if it should be easy to have different sites pick and choose what gets tweaked you could preserve your current layout, adding the "Common" subproject and symlinking anything you use from it unchanged, like so:

 Site
 |==.git
 |--BackOffice -> Common/BackOffice
 |--BackOffice.UI -> Common/BackOffice.UI
 |--BackOfficeTests -> Common/BackOfficeTests
 |  [...]
 |--Website
 |  |--admin -> ../Common/Website/admin
 |  |--App_Browsers -> ../Common/Website/App_Browsers
 |  [...]
 |  |--Styles
 |  \--web.config
 \--Common
    |--.git
    |--BackOffice
    |  \--UI
    |--BackOffice.UI
    |  \--WebControls
    |--BackOfficeTests
    |--Deployment
    |  \--db
    |--BusinessLogicLayer
    |  |--bin
    |  |--obj
    |  \--Properties
    |--scripts
    \--Website
       |--admin
       |--App_Browsers
       |--App_Code
       |--App_Data
       |--Styles.example
       \--web.config.example

The more I look at it the more I like that last one better.