Õ: kohatine naiivtõlge "pudelikael" viitab poolkeelsusele

olemus
"kitsas koht" kontekstist sõltuvas tähenduses,
näiteks jõudlust tugevalt vähendav tarkvarakomponent

Wiktionary:
2. (figuratively) in traffic, any narrowing of the road, especially resulting in a delay
3. (by extension) the part of a process that is too slow or cumbersome
It is easy to create entries; processing the paperwork is the bottleneck.
The bottleneck in this computer program is the inefficient sorting process; we should replace it with a faster one.

ülevaateid
https://en.wikipedia.org/wiki/Bottleneck

https://simplicable.com/new/bottleneck

https://www.mindtools.com/pages/article/newTMC_76.htm

https://transportgeography.org/contents/chapter2/transport-and-spatial-organization/bottlenecks-types-transportation/

https://tulip.co/glossary/what-is-bottleneck-analysis-everything-you-should-know/

https://www.machinemetrics.com/blog/bottleneck-analysis

https://mosimtec.com/5-insightful-bottleneck-analysis-examples/