The description of the characteristics of each city shown in Table 3 was insufficient, as was the reviewer's opinion. Accordingly, the project described in Table 3 was briefly explained and the contents of the article were also revised. - “... As a representative smart city project in Korea, Pilot city, Regulatory sandbox and Smart City Challenge are in progress. To summarize the smart city services used in this project, medical, crime prevention, transportation and environmental services are the most used.” Table 7 also agrees with the reviewer's advice that it does not fit the current content. Accordingly, the contents of Table 7 were deleted and only the contents described in the text were left. Thanks for your comments.
The authors made some efforts to streamline Section 2, and it is much easier to follow in its current form. Table 3 just shows that medical, crime prevention, transportation, and environmental services are the most frequent, which is already said in the text, but without an explanation of what pilot city, regulatory sandbox, and smart city challenge are, it is difficult to extract anything else from this table. Table 7 does not bring much useful insights as well in its current form. The authors have not responded to my previous comment on this table, I thus redirect them to my review of the previous version. However, some parts still appear unnecessary to me.