Workday developed an internal platform called Aviato to make building and managing large language models more efficient. This system, detailed in a Medium article, provides a centralised hub with tools for training, fine-tuning, and deploying LLMs, focusing on cost-effectiveness using techniques like LoRA. Aviato aims to empower Workday's domain experts to create innovative AI-powered features across their services, despite some ongoing challenges in scaling and integrating newer technologies. While primarily an internal tool, Aviato's development highlights a broader trend of enterprises creating their own specialised LLM platforms.