Much of the recovery has been put down to a relentless focus on product.

Getting this vaccine job done well and quickly requires the relentless focus of one small, streamlined, specific unit.

A retailer with such a relentless focus on costs that it will sacrifice sales growth to drive cost efficiencies and profit-margin growth?

The accountant set about cutting costs and rejigged his executive team, while instilling a relentless focus on cash generation.

This approach runs counter to most business gurus' thinking and to most marketing approaches, which rely on relentless focus on one industry.