.. meta::
   :description: The diff-diff practitioner guide — measure campaign impact and business interventions with Difference-in-Differences, no econometrics background required.
   :keywords: campaign impact measurement, marketing incrementality, DiD for data scientists

Practitioner Guide
==================

Measuring the impact of a campaign, product launch, or pricing change? This
track walks from business question to causal estimate without assuming an
econometrics background.

.. grid:: 1 2 2 2
   :gutter: 3

   .. grid-item-card:: Measuring Campaign Impact
      :link: practitioner_getting_started
      :link-type: doc

      An end-to-end walkthrough from marketing campaign to causal estimate
      to stakeholder-ready result.

   .. grid-item-card:: Which Method Fits Your Problem?
      :link: practitioner_decision_tree
      :link-type: doc

      Start from your business scenario — simultaneous launch, staggered
      rollout, on/off pulses, survey data — and find the right estimator.

Looking for worked examples? The :doc:`Business Applications tutorials
<tutorials/index>` cover geo-experiments, brand campaigns, survey-weighted
designs, and spillover-aware analyses end to end.

.. toctree::
   :maxdepth: 2
   :hidden:

   Measuring Campaign Impact <practitioner_getting_started>
   Which Method Fits Your Problem? <practitioner_decision_tree>