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.
Generally, a service agreement should include the following: a. a description of the services to be provided, and their frequency; b. identification of the persons or categories of persons who are to provide the services; c. the schedule or frequency of sessions of supervision or monitoring required, if any; service agreement is different from a bond. A service agreement binds both the parties to the agreement, whereas bond is one sided and binds the employee to the agreement only.