Expert Sierra is the most comprehensive, cloud-based, legal practice management solution for mid to large-sized law firms across the globe. With Aderant managing Expert for your firm, you’re able to cut the cord on multiple systems and remove the burden of managing on-premise hardware, updates, security and performance. Provide your firm with our best-in-class solutions for financial, case and matter management, time and expense capture, and more, securely from anywhere at any time.