In contrast, content sites commonly charge a fixed price per click rather than use a bidding system. PPC display advertisements, also known as banner ads, are shown on web sites with related content that have agreed to show ads and are typically not pay-per-click advertising.
A service-level agreement (SLA) is a contract between a service provider and its internal or external customers that documents what services the provider will furnish.
service agreement. A contract entered into for a contractor to provide some form of useful task for their employers in return for compensation. A service agreement can also be a feature offered along with a warranty for a product for the manufacturer to provide service or coverage of any costs of service in case the product malfunctions during a given period.