An important trend in today’s economy is to reduce the carbon footprint of organizations, businesses and households. Modern technologies, including ICT solutions, contribute to the reduction of CO₂ production. The article focuses on the potential of using the cloud computing model in managing a modern and intelligent city. Modern city offices have an extensive IT infrastructure. With the emergence of new services provided online by the offices, the server infrastructure is also developing. Server rooms together with additional devices are characterized by high demand for electricity. Along with this, significant amounts of CO₂ are produced. An alternative is the use of Cloud Computing solutions, which contribute to a significant reduction of the carbon footprint. The paper analyses potential solutions that can be used in city offices. The benefits and positive impact on the environment were highlighted. The empirical research was conducted based on questionnaires received from city offices. The results obtained indicate that city halls contribute significantly to the production of CO₂. Moving IT services and solutions in whole or in part to cloud computing should be considered as one of the important elements of managing a smart and green city.

The aim of the article is to present a model of sentiment analysis tool application for planning directions of city development. The study presents a model of using sentiment analysis to build city development strategies as well as realization of projects related to it. The presented model is a part of a larger work on developing the concept of the Regional Spatial Business Community (RSBC). The RSBC is created on the basis of electronic communities built by stakeholders involved in the development of a given city. On the basis of surveys, a six-stage city development procedure is proposed. Using the aforementioned procedure, we describe potential data sources, the goals of sentiment analysis application and expected effects. Analyses of the applicability of sentiment analysis are made on the basis of observation of available tools. The obtained model is applicable; however, its implementation requires certain conditions to be met.

The paper studies the subject of exploiting GIS technology to support regional e-undertakings. The paper has been drawn up on the basis of a research conducted by team of the authors from the district of Częstochowa. The research resulted in elaboration of the concept of Regional Business Spatial Community (RBSC). The authors propose the establishment of e-community using Geographic Information Systems (GIS) accessible via the Cloud Computing infrastructure enhanced with online community software. The research reveal that the most predestinated unit for the role of a coordinator of the proposed undertaking is the Office of the City of Częstochowa having adequate legal standing, experience and authority coupled with the proper GIS software. The supportive role of domain experts has been reserved to the scientists from the Częstochowa University of Technology. There are also other organizations that should take part in the project – the companies supplying utilities for the City of Częstochowa. The aim of the project is an elaboration of comprehensive software platform facilitating the public utility infrastructure investments in the city. The project encompasses choosing and preparing the proper ICT tools for RBSC, elaboration of the procedures of needed investments and indicating rules of sharing the GIS software and spatial information among the stakeholders

Poland is an attractive market for the development of e-commerce – a young industry, which is growing fast. The development of Polish e-commerce does not differ from the global trend, however, it is characterized by a large unused potential. This is due to still not a very large group of e-consumers and limited use of the power of the Internet in running a business activity by e-stores. The paper presents the characteristics of Polish e-commerce industry, the opinions of Internet users on online shopping and also the extent of use of web analytics and the type of marketing activities taken by Polish e-stores. The authors suggest areas for improvement in the functioning of e-commerce market in Poland. The article contains a proposal for improvements in marketing activities for the Polish online stores.

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