  In this article, we review how strong dynamics can be efficiently employed as
a viable alternative to study the mechanism of cosmic inflation. We examine
single-field inflation in which the inflaton emerges as a bound state stemming
from various strongly interacting field theories. We constrain the number of
e-foldings for composite models of inflation in order to obtain a successful
inflation. We study a set of cosmological parameters, e.g., the primordial
spectral index $n_{s}$ and tensor-to-scalar ratio $r$, and confront the
predicted results with the joint Planck data, and with the recent BICEP2 data.
