A STAC is relevant for: 

• Suppliers of transition-aligned solutions, which, with a purchase order facilitated by a STAC, can invest in and/or scale up substantial contributions to climate, nature and resilience;
• Buyers, which are companies that either purchase directly, or are indirectly linked, to the business activity area (i.e. sector) associated with a solution;
• Donors (these can be government subsidy providers, or potentially philanthropic organizations) that seek to bolster and support joining up and accelerating the ecosystem of partners that are seeking to accelerate transition; and
• Ecosystem members, which comprise several other groups that connect to and support the Scope 3 Market Mechanism. These include auditors, legal teams, and those providing financing to solutions suppliers — such as banks, equity investors, and non-bank lenders.