Scope 3 emissions refer to indirect greenhouse gas emissions that occur in a company’s value chain, including both upstream and downstream activities such as raw material extraction, transportation, product use, and disposal. Unlike Scope 1 (direct emissions) and Scope 2 (indirect emissions from purchased energy), Scope 3 often represents the largest portion of a company’s carbon footprint, making it critical for comprehensive climate strategies. Market readiness for addressing Scope 3 emissions is evolving but remains challenging. Companies face difficulties in data collection, measurement accuracy, and establishing responsibility across diverse suppliers and customers. However, increasing regulatory pressure, investor expectations, and customer demand for transparency are driving improved methodologies and standardized frameworks, such as the Greenhouse Gas Protocol’s Scope 3 Standard. Technology advancements, including digital tracking and blockchain, are enhancing traceability and reporting. While some industries and regions exhibit higher preparedness, broad market adoption requires further capacity-building, collaboration, and incentives. Overall, addressing Scope 3 emissions is essential for meaningful climate impact, and market readiness is progressing through improved tools, policies, and stakeholder engagement, though significant gaps remain to be closed.