Google provides client libraries for C#, Go, Java, Node.js, PHP, Python, and Ruby. It is better to use these client libraries if you are building logging systems in these languages, as the result log entries follow a certain format, making it easier for GCP to process. For example, if you don't use the client library, GCP logging will not be able to recognize the log level, and it will not display the correct icons in the Logs Explorer.