This article discusses the use of social media by different generations in destination marketing from a sustainable tourism perspective. In the light of the global COVID-19 pandemic, intensive marketing efforts and strategies to bring back sustainable tourism will soon become important. Social media (SM) can significantly support the promotion of destinations by guaranteeing an appropriate number and type of tourists. The article examines the frequency of using social media by different generations and the scope of their use in planning a tourist trip. The research was conducted in Poland on a sample of 397 respondents representing the group of Baby Boomers (BB), as well as Generations X, Y, and Z. The results of the research showed that the frequency of using SM decreases with age. The differences between the generations are visible in such behaviours as using SM to check opinions about tourist places, recommending a holiday with positive opinions and comments in SM, as well as resigning from a holiday based on negative opinions and comments.

The problem of overtourism, i.e., tourist congestion in visited places, and the negative impacts of tourists on the environment and residents, are increasingly noticeable with the increase in popularity of tourism. In addition, human impact on the environment is often negative in relation to the assumptions of the concept of sustainable development. However, the attitude of tourists to the problem of overtourism may vary depending on their ages, because, as in every aspect of life, there are intergenerational differences arising from the political, economic or technological development of the times in which a given generation grew up. The main purpose of the article is to examine the public awareness of the phenomenon of overtourism in the context of intergenerational differences, as well as to determine the impact of tourists on the places visited and the local community. The study was conducted on a sample of 386 respondents representing the X, Y, and Z generations. The study results showed that there is awareness among all generations of respondents about the problem of overtourism, although indifference to this phenomenon was demonstrated by the youngest respondents (Z generation). The respondents also agreed on individual elements of their own impact on the environment and residents, but with different determinations. The article ends with recommendations on the introduction of various management practices that should be implemented in order to make tourism more responsible and sustainable in the future. It is proposed that a road map should be compiled at the local level for sustainable tourism development.

In the light of the COVID-19 pandemic, it is crucial to manage tourist destinations to allow the recovery of tourism on the one hand and reduce its negative impact on the environment and the local community on the other. Information provided via social media (SM) by both residents and tourists can help restart tourism. This paper identifies ways of sharing travel experiences by tourists on social media. The research was conducted in Poland on a sample of 271 respondents from each generation using questionnaires. Results showed that the way tourists use SM during and after their trip differs by generation and gender what could be used in promoting responsible behaviour for sustainable tourism. Differences between generations can be observed in behaviours such as ongoing planning the trip, obtaining information about the place to stay, keeping a photo album for friends, and writing reviews. Moreover, more often than men, women use SM to obtain information about the place of stay and share their impressions of the trip by sending MMS or emails. Tracking tourists’ travel behaviour on social media will allow city managers to gather information and respond to their needs and expectations and ensure effective urban management and city promotion.

The application of new technologies is rapidly increasing, not only in private but also in professional spheres, including project management. However, the use of social media (SM) may be both beneficial and dangerous. Therefore, the goal of the article is to investigate in which areas it is possible to use social media in project management and what the opportunities and threats surrounding it are. In order to reach the goal of the article and obtain answers to the research questions, the methods of diagnostic survey and questionnaire technique were used. The research was carried out on a sample of 108 respondents involved in the project's implementation. To complement the obtained data, additional qualitative research using unstructured interviews was conducted. The presented research indicates that managers who work in an Agile or Hybrid way are more likely to use SM than managers who work in a traditional way. A significant dependency between the use of SM and the way the project team works was confirmed, but no age differences were found. Moreover, the results of the study show that social media usually supports project managers and team members in such areas as communication, cooperation, engagement, knowledge management, work productivity, promotion of the project and employee development. Threats concerning the use of social media in project management are noted in relation to the security of the project and loss of sensitive project data. Analysis of the study and interviews resulted in a broad set of principles of SM usage within projects. Future research could provide further confirmation of these findings by using larger samples.

The pivotal role of digital transformation (DT) in contemporary socio-economic development cannot be overstated. This crucial aspect is highlighted in the Agenda 2030, specifically in goal 9 among the 17 objectives. This article presents the results of a study assessing the level of DT in industry, innovation, and infrastructure in the 27 European Union (EU) countries in 2015 and 2020. Central to this study is the proposition of an aggregated Digital Transformation Assessment Indicator (DTAI), serving as a metric to gauge the progression of EU member states. Utilizing this indicator, the article assesses the advancement status of EU countries and orchestrates a comparative ranking of their achievements in fulfilling Sustainable Development Goal (SDG) 9 between 2015 and 2020. Moreover, a classification of countries into analogous groups based on this criterion for both periods is provided. The DTAI is prepared following the methodology of the linear ordering of objects—countries of the EU 27. The zero unitarization method (ZUM) is used as the main ordering method. To compare the results obtained, the DTAI value and classifications of countries in 2015, and 2020, are also presented using Hellwig’s pattern development method. The findings of this investigation underscore the variances existing among the EU 27 nations concerning the implementation of SDG 9. Furthermore, notable fluctuations in ranking positions are also observed. The research outcomes underscore significant challenges in DT implementation, particularly within Central, Eastern, and Southern European nations. The utilized research methodology bears substantial implications for the effective realization of the 2030 Agenda and its corresponding SDGs, both at the individual nation-state level and within the broader framework of the EU.

The article presents results of the qualitative research on competence of project team members in the conditions of remote working. These competences were considered in relation to different roles, which the members of such a team accept. The reference point to studied roles was the concept of Hansen and Allen authorships, and with regard to competence, the author's synthesis of deliberations above their models described in the literature.