The two-volume set CCIS 2225 and 2226 constitutes the proceedings of the Second International Conference on Information Technologies and Their Applications, ITTA 2024, held in Baku, Azerbaijan, during April 23-25, 2024.

The 51 full papers and 9 short papers presented were carefully reviewed and selected from 200 submissions. They were organized in the following topical sections:

Part I - information technology in intelligent systems; and information technology in modeling.

Part II - information technology applied in construction, industry, and engineering; and information technology in decision making.