The internal structure of hadrons, bound states, and the existence of $\mbox{ excited}$ states can be studied using hadron spectroscopy. Complementary information can be obtained using the multi-particle correlation technique, from which it is $\mbox{possible}$ to infer the existence and properties of bound states, and by $\mbox{measuring}$ the hadron yields and comparing them with predictions of the statistical $\mbox{hadronization}$ model. The latter has proved to be a powerful tool to calculate hadron $\mbox{abundances}$ and allows us to deduce indirectly the number of excited states of a given hadron species, including weakly bound states such as hypernuclei.

These proceedings describe recent results on short-lived exotic resonance $\mbox{production}$, hypernuclei structure, and searches for exotic bound states in different collision systems. The $\mbox{implications} $ of these results on the hadron structure and possible excited states are also discussed.