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.
A contract of service defines the employer-employee relationship, including the terms and conditions of employment.he agreement can be in writing, verbal, expressed or implied. It can be in the form of a letter of appointment or employment, or an apprenticeship agreement. However, to minimise disputes on the agreed terms and conditions, the contract should be in writing.