Trade-off slider
It means the "first deck of cards" that sets the course of the project. It is created to reflect on the Why and How when the project needs to make some decisions.
The tradeoff slider is a metric to fall back on when selecting the features you need in your project. Determine the priority of quality, budget, delivery, and scope, and use them as a guide when the project is faced with a decision. For example, if the budget is inevitably fixed, the budget will be priority #1, and the scope, quality, and delivery date will be adjusted to meet the budget. Generally, in agile development, the project proceeds by determining the "criteria" of what to emphasize among the four so-called QCDS indicators: "quality," "cost," "delivery," and "scope. The "trade-off drivers" are used to determine the order of priority of the evaluation criteria between the agile team and the project stakeholders. ---
This page is auto-translated from /nishio/トレードオフスライダー using DeepL. If you looks something interesting but the auto-translated English is not good enough to understand it, feel free to let me know at @nishio_en. I'm very happy to spread my thought to non-Japanese readers.