What is A/B Split testing?

Have you ever tried A/B split testing for your Digital Marketing Campaigns? You must have heard words Like optimization and cost reduction. This video tutorial below is a great demonstration of what exactly is A/B split testing. The benefits and its logical execution.
A/B split testing is the testing of two or more variations for the same Marketing asset. You need to develop a hypothesis and have to create multiple variations of marketing assets; for running an equal test to grab the winner variant in order to run a successful and optimized digital marketing campaign.