the organic growth engine for buy-and-build groups
Your entities already share customers. We turn the customers of one entity into hot leads for the others. You pay per lead.
Customers of Entity 1 could use Entity 3: 112 opportunities, nobody calls them today.
Across the group: 466 cross-sell opportunities
Add-on arithmetic no longer gets you there.
Higher rates, record entry prices and longer holds have removed the tailwind. What is left is growth from the customers your group already has.
- 10–12%
annual EBITDA growth is now needed for the return that 5% delivered in the 2010s.
- 0.2%
of buyout value creation came from margin expansion, 2013 to 2023.
- ~7 years
is the typical holding period now. Growth has to compound during the hold.
Your group was bought for synergies. The cross-selling rarely shows up.
Fewer than one in five acquirers reach their cross-selling goals. Overestimated revenue synergies are the most-cited reason deals disappoint. And more logos is not more growth: in Bain's sample, buy-and-builds that relied on arbitrage alone returned 1.4x, those with an organic growth case 2.2x.
Sources: McKinsey, Capturing cross-selling synergies in M&A, 2020; Bain & Company, M&A Report 2022 and Global Private Equity Report 2024
Unlock your cross-selling treasure.
The potential sits in the customer base. The capacity sits nowhere. addelis is that capacity.
Get your synergy caseEvery growth potential in your group at a glance.
The group matrix shows which entity's customers need which other entity's services, and what has already come of it. You see where the growth is, our team turns it into SQLs.
| E1Entity 1 | E2Entity 2 | E3Entity 3 | E4Entity 4 | |
|---|---|---|---|---|
| E1Entity 1 | 63 | 112 | 37 | |
| E2Entity 2 | 48 | 22 | 15 | |
| E3Entity 3 | 71 | 26 | 18 | |
| E4Entity 4 | 29 | 11 | 14 |
Row: customers of this entity. Column: potential for this entity. Sample data, totals only, no customer names.
Why cross-selling between entities stays undone, and what we do about it.
The causes are well documented. Each one has an answer, and none of them takes your entities' time.
Entities are absorbed by daily business.
Sales reps spend about 40% of their week selling. 44 to 47% of mid-sized German firms cannot fill open positions.
Source: Salesforce, State of Sales 2026; DIHK Fachkräftereport 2025/2026
Our team does the work.
We make the follow-up call on behalf of the entity. Your teams do not call anyone, they receive qualified leads.
The moment after the job goes unused.
85% of B2B supplier customers had a pain point in the past year. Only about half raised it.
We find the needs your customers never raise.
We ask what went well, what went wrong and what comes next. Complaints reach the entity within 24 hours.
The nearest growth sits in your own customer base.
73% of chief sales officers prioritised growth from existing customers for 2025.
Source: Gartner, CSO survey, 2025
Each yes becomes a lead at the right entity.
Only a real, stated need counts. The entity that fits gets the lead with occasion, service and contact.
Customers want one face, and a person when it matters.
61% of B2B buyers prefer a rep-free experience overall, yet want a seller's input when they judge fit.
Source: Gartner, B2B buyer survey, 2025
A portal for self-service, a person for judgement.
One portal under your group's name with a needs check across all entities. On the phone it is always a person, never an AI.
We sell the work, not the tool. Three levers on your EBITDA.
More revenue per customer
Customers of one entity buy the services of the others.
- Hot leads from your own customer base
- Cross- and upselling in the same call
- Needs check in the customer portal
Fewer customers lost
Unhappy customers surface before they cancel.
- Satisfaction asked in every call
- Complaints to the entity within 24 hours
- One portal for all reports and deadlines
Value from every add-on
A new entity brings customers and services that start working at once.
- New customers join the follow-up calls
- New services appear in the needs check
- The matrix shows the new potential
Same customers. More of the group sold to each one.
The potential is already in your customer base. Without someone to work it, it stays there.
Without addelis
- Each entity sells its own services
- Cross-sell potential stays in the customer base
- Revenue synergies stay a line in the investment case
With addelis
- Each entity keeps its daily business
- Our team turns existing customers into qualified cross-selling leads
- Customers request group services in the portal
How big the gap is depends on your group. We size it with your job volume, margins and exit multiple.
Get your synergy caseWhy we exist.
Groups are bought for synergies.
The customers are there. The services are there. The plan is there.
Then daily business takes over.
Entities are busy delivering. The follow-up call never happens, and customers never hear what the other entities can do.
We do that work.
We turn the customers of one entity into hot leads for the others. Software takes the routine. People take the conversation.
One face to the customer. One organic growth engine for the group. Paid by result.
Synergies you can show your board.
Every month one report for the group: calls, leads and complaints per entity and per entity pair. Orders and cost per lead we track with you in the pilot, against a group of customers we do not call, so you see the uplift, not a case study.
Get your synergy caseQualified leads
58
+21 vs Sep
New orders
14
24% of leads
Order value
€61k
per year
Cost per lead
€362
−6% vs Sep
| Entity pair | Leads | Orders | ValueOrder value |
|---|---|---|---|
| E1 → E3Entity 1 → Entity 3 | 19 | 6 | €26k |
| E2 → E1Entity 2 → Entity 1 | 14 | 4 | €17k |
| E3 → E1Entity 3 → Entity 1 | 11 | 2 | €9k |
| Other pairsOther pairs | 14 | 2 | €9k |
From the first call to the first leads.
Four steps. Your entities keep their daily business and have almost nothing to learn.
- 1
Call
You show us your group, your entities and your goals for the investment case. We show you addelis with sample data.
- 2
Setup
We set up group, entities, services and customer base for you. Your teams have almost nothing to learn.
- 3
Launch
Our team makes the follow-up calls, the portal goes to your customers, the first leads arrive at the entities.
- 4
Measure and grow
Every month you see calls and leads per entity. The platform grows with every acquisition.
Compliance is part of the product.
We speak to your customers on behalf of your entities. So the legal side is built in from day one, not added later.
EU hosting in Frankfurt
All data stays in the EU. Database and application run in Frankfurt.
Data processing agreement
We act as your processor and offer an agreement under Art. 28 GDPR for the group and every entity.
Channel rules built in
No cold contact between entities. We only ask customers your entity already serves (§ 7 UWG).
A human on every call
No AI agent makes calls. Your customers always speak to a person from our team.
Let's talk about your group.
Tell us briefly how your group is set up. We will get back to you personally and show you which work addelis can take on for you.