Poly(ionic liquid)s (PILs) are peculiar polyelectrolytes that ideally combine the unique properties of ionic liquids (high ionic conductivity, thermal, chemical and electrochemical stabilities) with those of polymers (mechanical stability, processing and tunable macromolecular design). We have pioneered in 2013 a new class of PILs having 1,2,3-triazolium cationic groups in the repeating unit as innovative functional and dynamic ion conducting polymer materials. Their synthesis merges the robust and orthogonal nature of the copper(I)-catalyzed azide-alkyne cycloaddition, the quantitative nature of the N-alkylation of 1,2,3-triazoles and anion metathesis reactions, together with different chain growth or step growth polymerization techniques. Establishment of precise structure/properties relationships allowed the development of several ion conducting materials having high thermal, chemical and electrochemical stabilities as well as high ionic conductivity. In addition, we have shown that polymer networks having 1,2,3-triazolium cross-links possess the appealing attributes of vitrimers where dynamic exchange through trans-N-alkylation reactions afford materials that can be reprocessed, reshaped and recycled. The latest developments in poly(1,2,3-triazolium) materials and their potential applications as solid electrolytes and dynamic materials will be presented.