Marketing has changed fundamentally in the new millennium. At the same time, sustainable marketing strategies have evolved to meet the challenges of environmental issues. In this study, we examined the trends in sustainable marketing strategies and the role of social media in these. Based on specific keywords per the objective, this study collected 33 published articles from the Scopus database from 1991 to 2022 (2012–2022). The KNIME (Konstanz Information Miner) and VOSviewer tools were deployed to provide detailed classification and prediction of the various trends in sustainable marketing, with a particular focus on the role of social media. The study method applied text mining and latent semantic analysis to predict the latest trends. The top three trends were Green Marketing and Consumer Behavior, Sustainable Social Media Marketing, and Influencer Social Media Marketing Practices. This NLP-based review and the clustering of research directions provide immense value to marketers and policymakers.

Smart cities are a current worldwide topic requiring much scientific investigation. This research instigates the necessity of an organized review to a heedful insight of the research trends and patterns prevailing in this domain. The string is formulated to extract the corpus from Scopus largest database of publications. The corpus of 8320 articles published from 2010 to 2022 is processed using Latent Dirichlet Allocation. Two, five, and ten topics have been extracted to provide the recent trends for IoT in smart cities. There has been an increased recognition that more attention needs to be paid to the area of smart cities so a complete overview of the topic of smart cities research, including the most prominent nations (institutions, sources, and authors) and noteworthy research directions has been presented in this paper. The scientific collaboration across countries (regions), organizations, and authors has also been widely discussed. A detailed and comprehensive overview and visualization of the trends and research patterns used to integrate the Internet of Things in Smart Cities. This data based experimental study signifies a roadmap of the research trends in Smart Cities by implementing topic modeling technique that has never been used in this domain. Based upon the topic modeling using LDA, authors have formulated three research questions and answered those question based on the in-depth research. At the end this study concludes the areas suggested are at the growing phase and need more insight for their growth.

As Sustainability becomes a central aspect of consumer values and corporate responsibility, marketing has evolved to incorporate concepts such as “green,” “sustainable,” and “smart” marketing, which are now being increasingly facilitated and amplified by digital technologies. This research investigates the intersection of digital transformation and green marketing, particularly emphasizing the transformative impact of technologies such as the Internet of Things (IoT), blockchain, artificial intelligence (AI), and digital platforms on sustainable marketing practices. The authors employ Latent Dirichlet allocation (LDA), a topic modeling technique, to analyze 2,061 research publications on green marketing from the Scopus database from 1991 to 2025. The analysis identifies the most prevalent themes and research clusters, which include sustainable consumption, digital marketing techniques, consumer purchasing intention, and green supply chains. An in-depth comprehension of contemporary research trends is provided by coherence-based evaluations, which generate solutions that encompass two, five, and ten topics. The primary scientific contribution of this work is the systematic mapping of fragmented literature and the identification of research voids, which has resulted in the proposal of a Theory–Context–Methodology (TCM) framework to guide future research. This investigation bolsters the theoretical underpinnings of green marketing and underscores the transformative influence of digital technology on promoting environmental Sustainability through marketing innovation.