## 5 Discussion and Conclusions
Hungarian companies need to be aware of how industrial digitization affects their industry, and whether their customers or suppliers are already working with technologies that will sooner or later present challenges for them, as well. It is very important that the consciousness and the methods and systems that will be used are built up on each other, as we can see from the survey. Businesses need to develop a number of capabilities that they may not have needed before (large amounts of data storage, analysis, development of relevant software), but which in the future will remain a basic requirement for staying competitive. It emerged from the interviews, as it has from the international literature, too, that Industry 4.0 exerts its greatest impact on production, and the companies surveyed also present a variety of methods and procedures. The advantage of the solutions built into production is not only the fact that data about everything is available immediately, but also that the intervention protocol can be worked out in advance, and the information available reduces the length of the decision-making process and forced downtime. If we look at the results of research that focus on the IoT, we can conclude that in the case of CPS, CPPS and Big Data Technologies, companies using them seem to be evaluated as having higher levels of logistic service, more efficient processes with their partners, better cooperation among certain logistics functions, and higher financial and market performance and better competitiveness. The use of IoT tools and solutions also extends to Hungarian companies. The results of the survey are not representative, and it is noticeable that the introduction of basic technologies for IoT--such as CPS, CPPS, and sensors--has already begun, and the conscious and systematic analysis of the data they produce already receives great emphasis. Over the next five years, all respondents plan to invest in IoT tools and solutions. Fortunately, it is not only in the engineering industry that more development is planned, but the chemical industry, and trade and logistics service providers are also interested, and in more than one area. The result of the research encourages businesses to invest in IT tools and automate their factories so as to be able to build contacts with each other on a broader scale. Speeding up product sales is also important, as meeting customer needs is the most important thing. A company's transparency is ensured by the big data applications which the companies surveyed want to introduce over the next five years. Based on the experiences of the interviews, further research questions can be formulated which are of great interest to corporate professionals. First, how can the currently highly production-oriented developments and the data they generate be included in the entire corporate information system so that the decision-making processes of other business areas can be supported by their analysis? An important issue is to discover what will encourage companies to cooperate with their partners, extend their data collection and share data across corporate boundaries. The third interesting field of research is the creation of data security and how this field will develop, what companies think about it and what solutions they adopt. The results cannot be generalized, but they do reveal trends. The automotive industry and electronics companies operating in Hungary have already started with Industry 4.0 developments. Their direction is primarily production and the motivation or stimulus provided by the foreign parent company, its newly adapted solutions, or the agility and innovation of the Hungarian leadership. The results of the research help us to re-think investments in IT tools (smart devices, RFID, big data analytics), and the utility of industry 4.0. In the future, it would be interesting to carry out research on a larger sample, even in consecutive years, as we can expect rapid change and development in this area.