Create the mainline (public) and virtual build labs (private) codelines.
Make sure the mainline is pristine and always buildable and consumable. Create shippable bits on a daily basis. Use consistent, reliable builds.
Build private branches in parallel with the main build at a frequency set by the CBT.
Use consistent reverse and forward integration criteria across teams.
Be aware that dev check-ins are normally made only into a private branch or tree, not the mainline.
Know that check-ins into a private branch are only reverse integrated (RId) into main when stringent, division-wide criteria are met.
Use atomic check-ins (RI) from private into main. Atomic means all or nothing. You can back out changes if needed.
Make project teams accountable for their check-ins, and empower them to control their build process with help from the CBT.
Configure the public/private source so that multisite or parallel development works.
Optimize the source tree or branch structure so that you have only one branch per component of your product.
