Babylon has repair and maintenance services available. This can be for a number of goods or services, such as plumbing, electrical wiring, appliances, cars, etc. Repairing restores the original function, which had suffered a breakdown or a lowering due to malfunctioning of certain parts. This is usually done by employing technical expertise. Replacement of faulty parts may also be needed. Maintenance services are more preventive in nature. This includes pre-empting breakdowns by making sure the goods and services are running properly. This may also include replacement of parts that are sub-optimal.