I’m taking an example of connection string to get it from appSettings section of web.config file. It’ll be easier to understand the basic difference between appSettings and connectionStrings in web.config file.
seen from China
seen from China

seen from Türkiye
seen from China
seen from China
seen from United States
seen from United States

seen from United States

seen from Brazil
seen from Thailand
seen from Russia
seen from Thailand
seen from China
seen from China

seen from United States

seen from United States

seen from United States
seen from China

seen from Mexico
seen from United States
I’m taking an example of connection string to get it from appSettings section of web.config file. It’ll be easier to understand the basic difference between appSettings and connectionStrings in web.config file.