A/B testing

[ey-bee tes-ting]

noun

1. Digital Technology.,  a stage of design and development that compares two or more versions of a web page or app in simultaneous use to assess which is the optimized version for achieving a specified design goal or performance metric.

2. a research methodology that compares two or more versions of a product or strategy to determine empirically which version is superior.

   A/B testing informed our graphics choices for the new email marketing program.