The following frameworks have been designed to help startups to choose the right traction channel to start with.

Brass Framework
David Arnoux of Head of Growth at Growth Tribe
http://growthtribe.io

This framework helps you prioritize which customer acquisition channels you should test first. It is based on two premises:
1)  the answer to the question “What should we try to drive users to our website?” lies within the startup. It is simply a matter of asking the right questions.
2) the more people you get involved in the acquisition channel brainstorming and voting, the better your chances of choosing the right channels to test.

Step 1 Get people together
The more people you get involved in the process of selecting customer acquisition channels, the better. Diversify the types of people (marketing, technical, CEO, analysts)

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