1a- Types of brief

Contractual brief:

A legal document which has been created between the employee and client that will be required by the company. The document would outline the duties and how the company organises their work as well as set specific guidelines which the companies must follow. It is a document which  defines the expectations of a client, the prices they agree on and the payment terms. Failing this could result to a breech of a contract which would mean the company could face legal actions.

Here is an example of a contractual brief for an advertising/marketing agreement. From this example you can see all the agreements given to you in order for you to be informed on what they are looking for from the client. From the agreement you can see how there are specific requirements that are given to you, as it is a legal document you have to follow all the points  provided.
 Looking at a contractual brief and the difference it has with the other briefs, as the contractual brief is a legal document it is a legitimate brief that requires specific guidelines on what they would want the company to achieve. The difference with a contractual and formal brief is a formal brief is not classified as a legal brief which allows the brief to be very basic and straightforward.

Formal brief:

Formal brief is a document that consists of detailed information about what the client wants the company to achieve. It is a very simple and straightforward document which refrains from any unwanted information. The brief may not be classified as a legal document.

Here is an example of a formal brief

Informal brief:

A less professional brief, that outlines the brief verbally. This brief does not inquire a written document.A discussion would be conducted between the client and employer where they will come to an agreement about the details on the contract.

Here is an example of an informal brief for a project brief. In the example brief it is a written brief which provides a basic list of needs and requirements of what the client is asking for. From the brief you can see how specific the client is, this allows the job of the employer to conduct what the client wants perfectly as it is very straightforward.
Looking at an informal brief and the difference it has with over briefs, as it is an informal brief it does not have to be carefully constructed like a co-operative brief as you are informing the employer what you are looking for as this can be also done verbally not much effort would be put into a documented version. However a co-operative brief is a much more efficient brief as there will be more than one company involved with this brief type. Co-opertaive brief is a brief which is a document given from one person to a various of people rather than informal which is a one to one brief. 

Co-Operative brief:

Two or several production companies are employed to follow the set brief provided which would be completed in team basis. A deadline would be given for the whole project to be completed, as this can affect the client which means they will not be satisfied with the work, this can then affect the company as they might not employ the companies in the future.

Here is an example of a co-operative brief from the state university Middle Tennessee, This brief is  a well constructed brief which has specific requirements on what it is asking for. You can see there are different sections on the brief made to create the brief very straightforward. 

Negotiated brief:

When the client and the employer come to an agreement about the brief of the project, which will consist of the final ideas of both the employer and the client. It is important that everyone such as the client, employer and company agree with the brief. If they do not agree to it all together it can cause inevitable problems in the near future.

Commission Brief:

A large corporation that employes an independent company to create their product and project for them. This type of brief is negotiated  between two companies, this can be opposed to an external client as anyone who receives the product once it has been established.

Tender brief:

When a client produces an advertisement which would require a media product to be created. An employer such as a production company would provide a brief, a budget and a proposal which would be pitched to the client to secure their chance obtaining any work that was advertised by the employer. The client would then make a decision on the best proposal featured form the group of candidates.

Competition brief:

A brief that has been made for all production companies to have access to the brief, this would be given to the companies who are participating in creating a project/ product. Each corporation would provide their own brief which will also be outlining their ethos. After finishing each of the projects, the companies are then judged by the clients.