${?}_{{?}_{{?}_{?}}{?}_{i}s\text{t}\text{h}\text{e}\text{a}\text{b}\text{i}\text{l}\text{i}\text{t}\text{y}to\text{p}\text{r}\text{o}\text{v}\text{i}\text{d}\text{e}\text{g}\text{o}\text{o}\text{d}\text{s}\text{a}\text{n}\text{d}\text{s}\text{e}\text{r}\text{v}\text{i}\text{c}\text{e}\text{s}to\text{c}\text{u}\text{s}\text{t}\text{o}\text{m}\text{e}\text{r}\text{s}\text{w}\text{i}\text{t}\text{h}\text{m}\text{i}\text{n}\text{i}\text{m}\text{u}\text{m}\text{w}\text{a}\text{s}\text{t}\text{e}\text{a}\text{n}\text{d}\text{m}\text{a}\text{x}\text{i}\text{m}\text{u}\text{m}\text{u}\text{t}\text{i}\text{l}\text{i}\text{z}\text{a}\text{t}\text{i}\text{o}\text{n}of\text{r}\text{e}\text{s}\text{o}\text{u}\text{r}\text{c}\text{e}\text{s}\text{.}}$

${?}_{{?}_{?}}{?}_{{?}_{?}}{?}_{i}s$ the ability $to$ provide goods and services $to$ customers with minimum waste and maximum utilization $of$ resources.

Volume flexibility

Reliability

Operational efficiency

Sustainability