Growth Marketing · B2B systems
The consultancy that grows businesses. It does not manage budgets.
B2B Growth Marketing with method. Productized systems connecting acquisition, conversion and retention under one accountable metric: pipeline attributed to revenue. No open-ended retainers. No hidden billable hours.
In short
What is a B2B Growth Marketing agency?
A B2B Growth Marketing agency designs and operates the full growth system: multi-channel acquisition, activation, conversion, retention and referral (AARRR). It combines SEO, Paid, Content, CRO, data + analytics and server-side attribution to CRM under one accountable metric: qualified pipeline.
cronuts.digital is a B2B Growth Partner with +304% average ROI and 3.2× pipeline in 90 days. Retainer from €3,500/month (Grow) and custom for Scale. Cases: Eninter +5,400 leads, JAX +4,600 MQLs, Mirror in the Sky +63% sales in 3 years. 90-day ROI guarantee.
Companies already moving their number with us
Agencies execute tasks. Cronuts builds systems that scale without breaking.
I want the system →Growth Marketing · 9 connected disciplines
Nine disciplines. One single system.
Each growth discipline is productized: fixed scope, fixed price, metrics attributed to CRM. We do not manage isolated channels. We build the system that connects every lever to pipeline and revenue.
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Digital marketing agency
Growth Marketing B2B
Growth Hacking consultant
Growth Partner B2B
Performance Marketing agency
Senior digital consultant
Marketing agency for SMBs
Marketing consultancy · Barcelona
Scale an online business
The system · not campaigns
A growth system connects 5 compounding loops.
One-off campaigns do not scale. Growth systems do. Every euro invested feeds multiple loops that reinforce each other: more traffic → more data → better targeting → lower CAC → more revenue → more budget → more traffic. A well-designed system over 12-18 months drops CAC while LTV climbs.
- Server-side attribution to CRM from day 1: every lead traced from source to revenue
- AARRR framework: Acquisition + Activation + Retention + Referral + Revenue measured weekly
- Experimentation backlog prioritized with ICE/PIE, 3-5 live tests every sprint
- Operational handoff to your team at month 6: playbooks, dashboards, decision framework
The 5 loops of the growth system
Acquisition loop
SEO + paid + content feed → qualified traffic with intent mapping
Activation loop
Landing + lead magnet + nurturing → high-score MQLs
Conversion loop
Sales enablement + sequence automation → SQL with signed proposal
Retention loop
Onboarding + success ops + NPS → monthly churn < 5%
Referral loop
Advocacy + case studies + NPS → 20% revenue via referrals
How we work
Three phases. Predictable pipeline in 90 days.
Method proven across 80+ B2B companies. First measurable impact by week 4. Full growth system live at 90 days with handoff to your team.
Phase 01 · Audit
Current system mapping
We audit your 5 loops: acquisition, activation, conversion, retention, referral. We identify the real bottleneck. We deliver an executive document with priorities + projected 12-month ROI.
Phase 02 · Build
System build
Implementation of the 2-3 prioritized levers. Server-side attribution. ICE-prioritized experiments with 3-5 tests/sprint. Weekly ops review. Looker dashboards with revenue attribution.
Phase 03 · Handoff
Your team operates it
Documented playbooks. Training for the in-house team (4 sessions). 30-day monitoring post-go-live. Optional renewal under Growth Partner model. Zero cronuts dependency.
Real cases · growth systems in production
B2B pipeline with attribution to revenue.
Eninter Ascensores: omnichannel growth system SEO + Paid + CRO + attribution = +175% organic clicks.
JAX USA: Paid + SEO + Analytics + CRM closed-loop = pipeline tier-1.
Mirror in the Sky: growth partner for 3 years, international expansion + retention loops.
Growth Truths 2026
Six things your current agency won’t tell you.
95% of agencies sell tasks. Not systems. Your EBITDA pays the difference.
Without server-side attribution to CRM, your ROI is fiction. What isn’t measured doesn’t scale.
Growth is not hacks. It is method, experimentation and systems with quarterly iteration.
The retention loop scales 3× cheaper than acquisition. Most teams ignore both.
Open-ended retainers punish outcomes. Productized + fixed scope changes everything.
If you need the agency to keep operating, you didn’t buy a solution, you bought dependency.
Verified reviews · B2B growth executives
B2B CEOs with a live growth system.
Frequently asked questions
What CEOs and VPs of Growth ask us before signing.
What is the difference between Growth Marketing, Growth Hacking and Growth Partner?
How much does it cost to work with cronuts on Growth?
Do you work with any company?
How does a "growth system" differ from traditional campaigns?
How long until results show?
What does "handoff to the in-house team" mean?
What is the ROI guarantee?
Can I switch from my current agency without breaking anything?
Growth audit · free · 14 days
We show you which loop is broken in your current system.
We audit your 5 loops (acquisition, activation, conversion, retention, referral). We identify the bottleneck blocking your growth. Executive document with HIGH/MEDIUM/LOW priorities + projected 12-month ROI. If there is no viable growth case, we tell you before signing.