Growth hacking combines marketing, product and data to drive rapid growth with limited resources. Put it into practice by defining a North Star metric (active users, revenue), mapping your AARRR funnel (Acquisition, Activation, Retention, Revenue, Referral), identifying the levers to test at each stage, running fast, measurable experiments, analysing the results and scaling what works. Start by optimising your conversion rate before ramping up traffic.

Growth hacking prioritises rapid experimentation, creativity and data to fuel explosive growth on a tight budget, whereas traditional marketing follows established processes with longer cycles and more comfortable budgets. Use growth hacking in the start-up phase, when resources are limited, to quickly test new markets or when you need to scale a proven product-market fit fast. Favour traditional marketing when budgets are healthier, markets are established, long-term brand building is the priority, or the organisation is more mature. Growth hacking works best for digital products, SaaS and mobile apps where viral loops are possible, while traditional marketing suits complex products, long B2B sales cycles and regulated industries. The best companies combine both: a solid marketing foundation plus ongoing growth experiments. Allocate 70-80% to proven traditional marketing and 20-30% to growth experiments, depending on your maturity.

Building a culture of testing and experimentation means securing leadership buy-in (accepting failure as a learning opportunity), setting aside a fixed testing budget (10-20% of your marketing spend), creating a simple process for submitting and prioritising tests, rigorously documenting every test (hypothesis, setup, results, learnings), celebrating what you learn as much as what you win, and training your teams in scientific rigour. Embed it in your organisation by starting small with visible quick wins to build support, sharing your learnings widely (not just the successes), setting up a monthly growth board to review tests, explicitly giving people permission to fail, and hiring or training data-driven profiles. A healthy testing culture runs 10 experiments to find 2-3 winners - that's normal, and it's a good sign.

Growth marketing is a holistic approach focused on growing the whole funnel (acquisition, activation, retention, revenue, referral - AARRR) through rapid experimentation and data-driven optimisation, while performance marketing focuses mainly on paid acquisition and conversion, with immediate, measurable ROI. Bring the two together by using performance marketing to acquire leads and customers effectively, applying growth marketing to optimise the whole post-acquisition journey (activation, retention, upsell, virality), and sharing insights both ways (performance tells growth which segments convert best, growth tells performance which ones deliver the best LTV). In practice: the performance team handles paid acquisition while the growth team optimises onboarding, engagement, retention and virality. Performance without growth fills the top of the funnel but lets it leak out the bottom; growth without performance runs out of fuel. Combine both for sustainable growth.

Product marketing positions and launches products (messaging, positioning, go-to-market, sales enablement), while growth marketing optimises growth metrics across the whole funnel (acquisition, activation, retention, revenue, referral). Keep them in sync by aligning product marketing messaging with growth campaigns, using growth insights (which messages convert) to sharpen product marketing, coordinating launches (product marketing sets the positioning, growth drives activation and growth), and sharing data and learnings both ways. In practice: product marketing builds the foundations (why buy our product), while growth marketing optimises execution (how to scale acquisition and retention). In tech scale-ups: product marketing sits upstream (positioning, launches), growth marketing downstream (optimising the funnel, scaling). The two are complementary - product marketing without growth lacks execution, growth without product marketing lacks strategic foundations. Organise around close collaboration, shared objectives (revenue, adoption) and regular syncs.