Nothing here yet.
I am a data scientist with an interest in building stories with data. My interests lie in Machine Learning and everything in between.
Functionally, they both do the same thing, make some portion of text 'bold', but the <strong> tag is more semantic, if a screen reader was reading through text in a <strong> tag, it would know to recognize that portion of text as bold/emphasised. The <b> tag is just not that semantic.