This document will provide an understanding of optical fiber, optical fiber cable (OFC), application standards, and key considerations that one should make before selecting optical fiber products. Typically, the first document shared with a user (Purchasing Manager, Technical Manager, and Installation Manager) is a technical datasheet. When several optical fiber cables are to be compared, as per the requirements of a project, a short list could be created based on the datasheets. However, all datasheets are not equivalent even if they look similar. One should know what the minimum relevant data are, how to find them, and how to compare them...