Digital technologies in experimental and field studies are considered, the interrelation with mathematical modelling is shown, digital technologies in production of materials, products and structures are presented, the brief analysis of development of computer material science is given. BIM and digital technology in the construction economy are under consideration as well. Paper also explains the concept of so-called "smart" home, "smart" district, "smart" city, "smart" region and "smart" country, which are normally used by smart professionals in terms of current realities, long-term and medium-term prospects. Besides, the expediency of development of design codes in the field of information technologies is assessed. © Published under licence by IOP Publishing Ltd.