1. Marketing and Brand Development Services. Please sign the agreement electronically or it may delay processing.A Marketing Contract establishes the terms and conditions for an agency or individual providing marketing services for a client. This contract is for creating and delivering messages that promote a product, service, or brand. Customize the Definitions of the free Marketing Agreement Template and you are sure to put your best face forward. Make sure to jazz it up with visual examples. The development services agreement is a contract between the client and the service provider that outlines terms of developing a product. A business development agreement (BDA) is a contract between two parties outlining future transactions' terms.