# Shared Logistics--Literature Review
## 4 Discussion and Research Limitations  
The purpose of the review was to summarize the existing research and concepts in the area of shared logistics from the period of 2017-2021. The goal of the review was to provide a benchmark for future researchers on what has been achieved and what has not been achieved on the topic, which approaches have already been tried, and what the results have been. The review also provides an important context for readers other than researchers about where science and practice are in the area of shared logistics. The review has been conducted using desk analysis, visual analysis, and benchmark datasets of approaches. We believe that our literature review will serve many researchers in the future to clarify the scope of their project and form a narrative about what is known and what is new. It will also avoid tried-and-tested approaches. For readers, the review provides an important context about where learning and practice are the areas of shared logistics. Our literature review is informative and thematically arranged, which gives the reader a picture of the current state of knowledge. In this paper, we presented an overview of the literature on shared logistics and its features. Processes of shared logistics and forms of logistics collaboration have been well described in the scientific literature. The number of articles relating to shared logistics grows in the following years within the analyzed period of 2017-2021. The thematic areas in the analyzed articles were highly related to the digitalization of processes, which seems to be a factor particularly conducive to the idea of shared logistics. Other significant areas of analysis were the issues of shared logistics in urban areas, shared distribution services, and shared logistics promotion. Surprisingly, only two of the analyzed papers deal with the issue of fleet sharing, in spite of the fact that fleet sharing is one of the most common manifestations of shared logistics mentioned in the definitions. There was also little mention in the articles reviewed on the subject of shared packaging, which seems to be particularly important given the widespread efforts of companies to reduce waste and cut the costs of packaging. These areas, therefore, need to be further explored, together with the safety and security issues in shared logistics processes. It is worth paying attention to the fact that the most frequently discussed topic seems to be the simplest in relation to the whole subject of shared logistics-electronic platforms supporting sharing. There are also many papers that describe how storage and distribution could be shared. The fewest papers are devoted to barriers that may be encountered by the implementation, and there are many of them. Companies are reluctant to change the status quo or share their resources, as well as about the security of their data. This is another aspect that the literature devotes little time to, namely, how to ensure data security and how to convince logistics agents to share resources. The authors believe that their literature review will serve many researchers in the future to clarify the scope of their project and form a narrative about what is known and what is new. It will also avoid tried-and-tested approaches. The review is relevant for many reasons:  
1. Shared logistics refers to the concept of sharing resources and infrastructure in logistics operations, such as transportation and warehousing, in order to improve efficiency and reduce costs. By conducting a literature review in this field, we provide a comprehensive understanding of the current state of research and identify gaps in the existing knowledge. 2. Shared logistics is a rapidly developing field with growing interest from academics and industry practitioners. By conducting a literature review, one can stay updated on the recent development in the field and identify the current trends and challenges. 3.