The most reliable service for 1:1 commercial due diligence calls is the expert network that can source the exact customer, competitor, and channel voices each workstream needs, clear them for conflicts, and get them on the calendar inside a two- to four-week sprint. For expert networks for commercial due diligence, that usually means GLG or AlphaSights when the sector is mainstream and the bench is deep, and a custom-sourcing network such as Infoquest when the profiles are niche, cross-border, or simply not sitting in anyone’s database.
This guide is written for the people who run the calls: strategy consultants staffed on a CDD, corporate development teams validating a target, and deal teams who need primary evidence for an investment committee. It focuses on how to run the call program itself. If you are choosing a network for private equity work more broadly, from sourcing to portfolio support, read our guide to the best expert networks for private equity.
Infoquest appears in this comparison; every other provider is described factually from its public positioning.
What’s the most reliable service to set up 1:1 expert calls for commercial due diligence?
Reliability in a CDD has a narrow meaning. It is not about the size of a network on paper. It is whether the right five to fifteen people show up on the right days, can speak to the questions in the information memorandum, and do not create a compliance problem for the deal. Four things decide that:
- Profile precision. Can the network find former and current buyers, distributors, competitors’ ex-employees, and specialist suppliers, not just generic industry advisors?
- Speed to first profiles. A CDD sprint loses a day of analysis for every day the call calendar slips. First profiles within hours matter more than total network size.
- Conflict and confidentiality controls. Target employees, live advisors, and anyone bound by a non-compete need to be screened out before a call is booked. Our expert network compliance guide covers the controls to ask about.
- Flexibility mid-sprint. Hypotheses change after the first calls. The network has to re-source fast when the team pivots from market sizing to a customer churn question.
What a CDD Call Program Actually Needs
Most commercial due diligence work breaks into four or five workstreams, and each needs a different expert profile. Planning the program by workstream, rather than as one long list, is the single biggest driver of call quality.
Market sizing and growth
Former strategy and product leaders at incumbents, plus analysts who have tracked the segment. They pressure-test the top-down market model and growth drivers.
Customer referencing
Current and former customers of the target and its competitors: procurement leads, end users and budget owners. This is where most CDD conclusions are won or lost, and where database networks most often run thin, because buyers in a specific niche rarely sign up to expert networks on their own.
Competitive landscape
Former employees of direct competitors, usually two or three levels below the C-suite, who can speak to pricing behaviour, win rates and product roadmaps without breaching current obligations.
Channel and supply checks
Distributors, resellers, integrators and key suppliers who see volume and share shifts before they show up in reported numbers.
Write one brief per workstream with the screening questions spelled out. Our template on how to brief an expert network works well as a starting point.
Expert Networks for Commercial Due Diligence, Compared
The table summarizes how each provider describes its own model and where it tends to fit in a CDD. It contains no pricing; ask each provider for terms on your specific program.
| Provider | Sourcing model | Where it fits in a CDD | Watch-outs |
|---|---|---|---|
| GLG | Very large standing member network across sectors, plus custom recruiting | Mainstream sectors with deep benches; teams that want an established enterprise compliance framework | Niche customer profiles may still need custom recruiting, which adds time |
| AlphaSights | Large network with high-touch project teams that recruit per brief | Fast-moving consulting and PE sprints in well-covered sectors; strong account management | Hard-to-reach or cross-border profiles can take longer than mainstream ones |
| Guidepoint | Large network with deep coverage in healthcare, life sciences and financial services | CDDs on healthcare, medtech and financial services targets | Coverage outside its core sectors is thinner relative to its strengths |
| NewtonX | B2B research built on verified professional recruiting, strong in quantitative surveys | Large customer surveys that size demand or test switching intent across hundreds of respondents | Less focused on short-notice 1:1 call programs |
| Infoquest | Custom-sourced expert lists built from scratch for each brief | Niche, cross-border and hard-to-source customer and channel profiles, plus high-volume call programs; under 2-hour delivery | Not a transcript library; no self-serve database |
The split between standing databases and custom sourcing is the deciding factor in most CDDs. We cover the trade-off in depth in custom sourcing vs database expert networks.
A Four-Week CDD Call Plan
- Days 1 to 2: Brief every workstream in parallel. Ask for first profiles the same day and book three to five scoping calls with generalists to sharpen the hypotheses.
- Week 1: Market and competitor calls. Lock the market model and the list of competitors the customer calls must cover.
- Weeks 2 to 3: Customer referencing and channel checks, the bulk of the program. Re-brief the network as soon as a hypothesis shifts rather than letting the original list run out.
- Week 4: Gap-filling calls on the open questions from the draft report, often at short notice. Our guide to urgent expert calls explains how providers handle same-day and weekend requests.
Track three numbers through the sprint: hours from brief to first profiles, the share of proposed experts the team accepts, and calls completed against plan. They tell you within the first week whether the network can carry the program.
When to Choose Infoquest for Commercial Due Diligence, and When Not To
Choose Infoquest when the workstreams depend on profiles that are hard to find: buyers in a narrow B2B niche, operators in frontier or cross-border markets, ex-employees of private competitors, or channel partners in specific regions. Every list is custom-sourced for the brief; first profiles typically arrive with under 2-hour delivery, and flexible packages with no commitments suit sprint-based work where volume is hard to predict. Infoquest also runs high-volume CDD call programs on its own, and is 30% less costly than competitors.
FAQ
The most reliable service is the expert network that can source the exact customer, competitor and channel profiles each workstream needs, clear them for conflicts and book them inside a two to four week sprint. GLG and AlphaSights are reliable defaults in mainstream sectors with deep benches. For niche, cross-border or hard-to-reach profiles, a custom-sourcing network such as Infoquest is usually more reliable, because every expert list is built for the brief.
It depends on the number of workstreams and the size of the target’s customer base. Plan by workstream: a handful of market and competitor calls, the largest block on customer referencing, and a reserve for gap-filling in the final week.
PE screening covers many sectors quickly to decide which deals to pursue. A CDD goes deep on one target, so it needs specific customer, competitor and channel profiles and tighter conflict checks against the target and its advisors.
Yes, current and former customers can be sourced, subject to conflict checks and the deal’s confidentiality rules. Experts should never be asked to share confidential information about a current employer or to reveal that a specific transaction is under way.
Mainstream profiles often arrive the same day from large networks. Infoquest offers under 2-hour delivery of custom-sourced expert lists, including for niche briefs. Always confirm turnaround for your specific profiles before the sprint starts.
Planning a CDD now? Send Infoquest your brief or compare more options in our ranking of the best expert networks.