Continuous technological progress makes it possible to use the Internet of Things (IoT) in broader dimensions. Digitization, computerization, and innovation are now key factors for businesses and countries to achieve added value and make progress in competitiveness and attractiveness. These are also optimal conditions for the application of IoT. This study aims to show the status of the implementation of IoT in neighboring countries — the Slovak Republic and the Czech Republic — compared to the United Kingdom, which is in the lead. Similarly, the goal was to compare the areas of digitization and informatization to the Networked Readiness Index (NRI), the Digital Economy and Society Index (DESI), and the Digital Transformation Scoreboards (DTS). Material support for this paper was garnered from the relevant literature. The theoretical basis for issues related to IoT was presented after analyzing secondary sources to determine the current state of the industry and the level of digitization. The those indexes were compared using data from Slovakia, the Czech Republic, and the UK. The UK is among the leaders in the field of IoT. The resulting data are presented graphically. Slovak companies that operate mainly in the industrial sector are beginning to discover and implement IoT. More and more cities are adopting this technology. The situation in the UK is already quite far along. During the evaluation of the NRI, DESI, and DTS, Slovakia was ranked lowest, the Czech Republic was ranked slightly higher, and the UK was rated the highest. Comparison of the digitization of the economy and society, and the deployment and use of ICT highlight the need for further development of these areas in the Slovak and Czech republics.