There isn’t a forking lot of difference between Mayonnaise and Aioli. This is what they are.
Mayonnaise is an emulsion of neutral oil, egg yolk, lemon juice or vinegar. Adding the addition of mustard to Mayonnaise turns the sauce into Remoulade.
Aioli was invented in France. Aioli is hand made by pounding garlic cloves into a paste and then whipping egg yolk, lemon juice, and olive oil into the mixture.