How to map story points to function points?

On the past year, I worked on a bank and influenced the contract change to accept function points and agile delivery.

Instead of trying to match FP directly to story points, we used a triangulation via MVPs.
All focus goes into the MVP and what goes into the MVP. Business value must be clearly defined in terms of MVP.

Then, from one side, the metric people handle the mapping from MVP to FP.
And, from the other side, the agile people handle the mapping from MVP to stories and story points.

The success of such triangulation relies on the success of a great inception, where everyone is super aligned, allowing the mappings to happen smoothly.

function-points-story-points-mvp

Enjoy this great book on MVP and Lean Inception:  Lean Inception: How to Align People and Build the Right Product

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Confira esse livro sobre lean, contratos, e métricas de software (Pontos de Função, SNAP e Cosmic): Enxugando a Máquina: Lean MVP & Pontos de Função