The ability of Layer-by-Layer (LbL) or Successive Ionic Layer Deposition (SILD) technology to synthesize the layers of nanocomposites, “hybrid” structures and multicomponent metal oxides on various substrates is being discussed in this report. It was shown that concentration and pH of the solutions used, the processing time, and the number of the LbL (SILD) cycles were the main parameters of this process. It was made a conclusion that coatings formed by LbL technology can be used in gas sensors and catalysis for the surface functionalization, in membranes and filters for the pore size controlling, in solar cells for the solar energy conversion, in medicine for the formation of bactericidal coatings, and so on.