What is the reason behind giving Zakat to the al-Amilin Alayha (the administrators of Zakat)?

Funding is the key to all endeavours. To progress and increase efficiency, there are always costs involved. To keep services to Zakat payers and Zakat recipients at an optimal level and in line with the context and culture they live in, it is imperative to keep updating and improving operations. Hence, it is of no surprise that Allah Himself has permitted the Zakat administrators to receive Zakat as a wage. This is self-sustainability and efficiency in establishing this pillar of
Islam.