Status of the B-physics anomalies

I discuss the current status of the discrepancies between the experimentally established ratios
to check the lepton flavor universality violation and the values estimated within the Standard Model,
both in the tree-level processes

$R_{D^{(\ast)}} = B(B\to D^{(\ast)} \tau \nu) / B(B\to D^{(\ast)} \ell \nu)$ [$\ell \in (e,\mu )$]

and in the loop-induced ones,

$R_{K^{(\ast)}} = B(B\to K^{(\ast)} \mu \mu) / B(B\to K^{(\ast)} ee)$.

After a short review of the models proposed in the literature, I will focus on various leptoquark scenarios
to show that the scalar leptoquarks can still be used to describe the above mentioned anomalies.
A brief recount of the "little $B$-physics anomaly" will also be made as well as a prospects for near
future.