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Shell-isolated nanoparticle-enhanced Raman spectroscopy (SHINERS), one of the application modes of surface-enhanced Raman spectroscopy (SERS), shows wide applicability in the materials and morphology of substrate being examined, and thus, is a powerful analytic technique that allows in situ/operando measurements at a solid-liquid interface, acquiring intrinsic vibrational spectra (fingerprint information) of materials at a molecular scale. This article provides an overview of the development of Raman spectroscopy suitable for in situ/operando interfacial analysis and introduces some recent technical developments of the amplifiers in SHINERS techniques. [ABSTRACT FROM AUTHOR]