The best tech stack for growth.

Hey there, Felix here 👋

Welcome to The GTM Agent—the newsletter to help integrate AI into your GTM strategy to scale revenue and stay ahead.

Last week I've been going over The $5M Inbound System  we have set up for a client of us. And I will extend that a bit further today.

We have one more secret to share - our tech stack, and how we thought about these decisions. That's what I'm covering today.

This tech stack alone is responsible for generating nearly $40M in pipeline for our clients.

Let's get into the tech stack.

 🕵️ GTM Secrets

The best tech stack for growth.

Every tool we use for us and our clients as of Q1 2025.

For the past 3.5 years, I’ve basically lived and breathed growth. I started out as a freelance marketer juggling all sorts of tools, and now I’m the founder of Integrato.

One thing I’ve learned is that no matter how great your tech stack is, it’s not a magic fix—your team and partners are what really drive success.

That said, choosing the right tools can totally level up your productivity. In our case, they’ve sped up our experiments and let us automate a big chunk of our pipeline without breaking a sweat.

How we onboard growth tools.

When evaluating growth tools, it helps to start with a couple of big questions:

1. Should we build our own or purchase an existing solution?

2. What’s the actual cost of ownership over time?

Build vs. Buy?

For most teams—probably around 95%—buying software that your growth team can handle without outside help is usually the smarter move.

Top-tier teams might pull off custom in-house builds (especially if they have a unique blend of engineering, product, and growth expertise), but that’s pretty rare.

If your team doesn’t have those specialized skills in place, buying a tool that you can manage with the people you already have will likely save you a lot of stress.

Another factor here is speed. Growth usually depends on rapid experimentation, and it’s easy to underestimate the complexity of building, testing, and maintaining your own solution. If you want to stay nimble, buying off-the-shelf tech can be a big advantage.

Aligning Costs with Your Model

No matter what you choose, your decision should line up with your unit economics and ROI targets. For instance, we aim at a return on CAC within 6 months.

If a tool doesn’t help us hit that benchmark, it’s probably not a fit.

This is one reason why a quick calculation—no matter how rough—can really help guide decisions.

Total Cost of Ownership (TCO)

It’s easy to overlook the full expense that comes with new software. Ask yourself:

• Who’s responsible for managing and maintaining it?

• How much extra effort—on top of licensing fees—will it require to get real value from this tool?

A good example is our email infrastructure. We use a few different tools, which cost a few hundred dollars a month.

That by itself isn’t much. But we also pay a specialist roughly seven times that amount to keep our deliverability and overall infrastructure on point.

So if you just look at the monthly fee, you’re missing the real cost picture.

Maintenance and Scalability

Ideally, you want tools you can set up once and let run in the background, without needing to add more people every time you expand.

Scalable tools free your team to focus on strategy and execution rather than constant tool upkeep. I

f every new piece of software requires new hires or extra hours, it might not be worth the headache in the long run.

At the end of the day, it’s about striking the right balance. Tools can supercharge your growth efforts when chosen wisely, but they should never become a distraction from what really matters: building and delivering value through the combined effort.

The Tech Stack

Note: We optimize for ROI, speed and innovation.

Every single tool has a crucial purpose and clear ROI for us.

Here’s the stack:

Framer – We rely on Framer for our main website funnel, ensuring smooth conversions and helping with SEO.

HubSpot – Our all-in-one CRM and marketing automation powerhouse, centralizing customer data and outreach.

Default – Handles scheduling, lead segmentation, and routing—dramatically speeding up our growth processes.

Unify – Automates the entire outbound cycle, from intent signal tracking to verified contact sourcing and email deliverability.

n8n – Lets us build AI-driven workflows that connect various parts of our tech stack.

Zapier – Bridges gaps between different apps, automating repetitive tasks across our toolset.

Clay – Enriches our data, giving us deeper insight into leads and customers.

Airtable – Keeps everything organized in one place, acting as our central source of truth.

La Growth Machine – Manages multi-channel outreach, particularly on LinkedIn and via email campaigns.

beehiiv – Streamlines newsletter creation and distribution for more effective audience engagement.

Customer.io – Automates personalized messaging across multiple channels to keep users engaged.

RB2B – Specialized in generating B2B leads, fueling our pipeline with qualified prospects.

Dreamdata – Provides detailed B2B revenue attribution, helping us align marketing efforts with actual outcomes.

Segment – Aggregates and routes all our customer data to the right tools for analytics and marketing.

Hyros – Delivers advanced tracking and attribution for ad campaigns, helping us make better data-driven decisions.

Closing thoughts.

Though technologies and tactics change over time, the core principles remain: encourage ongoing experimentation, aim to launch new tests at least every other week, and seek out quick wins you can multiply.

The ultimate objective is a consistent, repeatable revenue engine that brings in a steady stream of pipeline and turns leads into loyal customers.

If you have any questions or want to chat more, feel free to reach out—always happy to help!

BEFORE YOU GO…

Thanks for reading, as always.

Thanks again for following along.

Do you have specific questions about our tech stack?

Shoot me a DM and let me know.

Happy to clarify anything that wasn’t clear in the write-up.

Thanks a ton,

Felix

PS: If you are curious how this could boost your strategy? I’d love to share a few insights that helped others grow here.