This article focuses on four cores: market trends, scenario-based selection, compatibility tips, and Finisar adaptation, providing practical selection solutions for enterprises, carriers, and data centers. Learn how to select and deploy 800G OSFP optics for AI data centers: specs, compatibility checks, troubleshooting, and ROI guidance for engineers. The 800G OSFP (Octal Small Form-factor Pluggable) transceiver functions as the core element which provides 800 Gbps optical bandwidth through eight 100G. The abbreviation OSFP represents Octal Small Form-factor Pluggable. The explanation appears simple to understand. However, it shows a deeper meaning that extends beyond its first impression. The OSFP MSA (Multi-Source Agreement) group developed this form factor to solve thermal and density problems. As hyperscale data centers shift toward AI-optimized fabrics and ultra-high-bandwidth switching platforms, the OSFP (Octal Small Form-Factor Pluggable) form factor has become central to next-generation optical architectures. Designed for high thermal capacity, electrical scalability, and forward. This guide explains how OSFP ZR coherent technology works, the differences between 400 ZR, OpenZR+, and 800 ZR, and why OSFP is becoming increasingly important for high-power coherent networking deployments. 1 What is the difference between 400G ZR and 400G ZR+? 8.