Multi-Source Agreement (MSA) standards are industry-driven technical specifications jointly developed by multiple leading manufacturers to define common form factors, electrical interfaces, optical interfaces, mechanical dimensions, and management protocols for optical transceiver. Multi-Source Agreement (MSA) standards are industry-driven technical specifications jointly developed by multiple leading manufacturers to define common form factors, electrical interfaces, optical interfaces, mechanical dimensions, and management protocols for optical transceiver. MSA (Multi-Source Agreement) standards define the mechanical, electrical, and management interfaces of optical transceivers, enabling multi-vendor interoperability, supply chain flexibility, and large-scale network deployment. Understanding MSA is critical for compatibility validation, cost. As a foundational framework in transceiver design and manufacturing, the MSA Standard defines the electrical, mechanical, and optical characteristics of optical modules, enabling seamless integration within high-speed networks. For ESOPTIC, a trusted supplier of high-performance optical. There are also MSA standards for other optic transceivers like SFP+, XFP, QSFP, etc. SFP transceivers meeting the SFP Compatibility requirement are usually compatible across a range of telecoms vendors' hardware, therefore users can mix and match components from different vendors. In the explosive OEM compatible optical module market, learning to choose is particularly. Being an industry group uniting representatives of the data and optical worlds, OIF's purpose is to accelerate the deployment of interoperable, cost-effective and robust optical internetworks and their associated technologies. Optical internetworks are data networks composed of routers and data. This document provides guidance on the requirements for co-packaged optic assemblies designed for high-radix, network switch applications with 100Gb/s electrical interfaces.