Operations · business glossary
What is Bottleneck?
By Shivam Bhandari · Reviewed 31 October 2026 · How we write
definition
The single slowest step in a process that limits how much the entire process can output, regardless of how fast other steps run.
Bottleneck explained
A bottleneck is the slowest step in a process, which limits the output of the whole system.
example
A bakery can mix dough for 500 cakes a day but bake only 300 — the oven is the bottleneck.
why it matters
Improving anything other than the bottleneck doesn't increase total output.
common mistake
Investing in faster non-bottleneck steps, which only builds up work-in-progress.
Frequently asked questions
What is Bottleneck?
The single slowest step in a process that limits how much the entire process can output, regardless of how fast other steps run. A bottleneck is the slowest step in a process, which limits the output of the whole system.
Why does Bottleneck matter?
Improving anything other than the bottleneck doesn't increase total output.
What is a common mistake with Bottleneck?
Investing in faster non-bottleneck steps, which only builds up work-in-progress.
Related terms
Capacity utilisation
The percentage of a business's total possible output that's actually being used or produced.
WIP (work in progress)
Items or tasks that have been started but not yet completed as they move through a process.
TAT (turnaround time)
The time between a request entering a process and the result coming out the other end.