The article discusses the importance of optimizing steam-cracking furnaces in the chemical process industries for sustainability and decarbonization. Steam crackers are crucial for producing ethylene, a key feedstock for various products, but are also significant energy consumers and CO2 emitters. With the increasing demand for ethylene, there is a need to enhance energy efficiency and reduce emissions. Decarbonization strategies like carbon capture, hydrogen fuel switching, and renewable feedstock adoption are highlighted as effective measures. Process simulation software is recommended for precise modeling and optimization. Specific strategies such as using bio-based and recycled plastic waste feedstock, improving thermal efficiency through furnace enhancements, and implementing pre-combustion strategies are detailed. The incorporation of hydrogen into the fuel mix is emphasized for efficient combustion and reduced carbon footprint. Overall, the article focuses on the potential of decarbonization strategies in steam-cracking furnaces to drive sustainability and reduce environmental impact in the chemical industry.