Aid delivery systems have evolved over time. Historically, these systems prioritized accountability to donors and governments. This approach ensured resources flowed from top to bottom.

The concept of localisation has been discussed and reexamined. Language surrounding this issue has changed, with terms like "equitable partnership" and "systems" being used. Further details about the development of aid systems and localisation are available, including the role of international organisations and significant events like the World Humanitarian Summit.