A/B Testing a block has also now been moved into the core product.  This means that if you want to A/B testing a block, that you no longer need to use any additional add-ons, like the self-optimising block anymore.  A/B testing a block is exactly the same as A/B testing a page.  In the editor, find the page you want to test and open it.  

Find the block that you want to edit and make the changes you require

episerver_ab_testing_block_1  

After you make your changes the usual blue 'Ready To Publish' notification will appear as seen above.

episerver_ab_testing_block_2

Instead of clicking the usual 'Publish' button, click the 'A/B Test Changes'

episerver_ab_testing_block_3

From here you will be presented with the A/B testing screen.  The options here are exactly the same as the options to A/B test a page which I covered in, How To A/B A Page Within The Episerver Editor.

episerver_ab_testing_block_4

After you have set the conversion goal, the participation percentage and the experiments time duration, click the Start Test button. That is all you need to do! Super-powerful and easy! Happy Coding 🤘