What is a buffer?
Buffers are designed quantities of time, sized and applied to a project schedule to protect what is important to the success of that project. The Project Buffer protects the promised due date from variation in the critical chain. Feeding Buffers protect the ability of the critical chain to maintain its relay race performance by buffering the variation of non-critical tasks and chains where they feed into or merge with critical chain tasks. With a properly sized feeding buffer inserted, the critical chain task that relies inputs from that non-critical chain has an improved chance of being able to start as soon as it predecessor critical task is complete. Capacity buffers are used in multi-project environments to help isolate the impact of variation of key resource performance in one project from subsequent projects. Resource Buffers are unlike the other buffers, as they do not directly impact the lead time or scheduling of the project, but rather serve as a wake-up call for resources th
