Backreacting flavors in the Klebanov-Witten model via D7-branes

We discuss the addition of backreacting D7-branes to (fractional) D3-brane solutions in IIB supergravity which is dual to the addition of a large number of fields in the fundamental representation to known field theories in the Veneziano limit. We specialize to D7/D3-branes on the conifold (flavored Klebanov-Witten theory); we then generalize to massive flavors and to the case of fractional D3-branes and D7-branes with gauge flux (flavored Klebanov-Tseytlin theory).