Dataflow Management LLC · Since 1998

We work where buildings meet networks.

Independent advisory across two practices: the technology that runs an organization, and the real estate and facilities that house it. We assess what you have, design what you need, and oversee the work until it is built and proven, so the decision is better and the cost of getting it wrong is lower.

The firm

Most advisors stop at the wall, or stop at the rack. The hardest decisions sit across that line.

Dataflow Management is a privately held advisory firm, founded in 1998 and run as a full-time practice since 2002. We work in two disciplines that most firms keep apart: the technology that runs an organization, and the real estate and facilities that house it. The range belongs to the firm. The depth belongs to its principal, Tom Marsh, whose own career across both runs back more than three decades.

We are independent in the way that matters to a client paying for judgment. We hold no vendor relationships, take no commissions, and resell no hardware or software. The recommendation is the only thing we have to defend, and that is precisely why clients pay us for it.

What makes the advice worth paying for is that it is not only advice. Tom built and ran these environments inside the companies he worked for, and he brings that operating experience to clients without the vendor ties.

Our clients include firms in technology, life sciences, higher education and research, manufacturing, insurance, law, construction, and private equity. The people who bring us in are usually CFOs, CIOs, COOs, and the heads of real estate, workplace, or operations who answer for the result. We do not name them, because confidentiality is part of what they are buying.

The firm is based in Andover, Massachusetts, and has worked across the Americas, EMEA, and APAC. From 2007 through early 2026 it ran a dedicated APAC base in Hong Kong.

Global

Engagements delivered across the Americas, EMEA, and APAC.

Up to 350

Mixed teams led, internal staff and contractors, union and non-union.

Eight figures

Sustained annual savings, across both technology and network spend and facilities and operating cost.

Two practices

One firm, two disciplines.

Each practice stands on its own and has its own page. Most engagements start in one and reach into the other.

Practice one

Dataflow Technology

Multivendor network and voice converged on IP, a passive optical LAN where it fits, the IT side of the data center, cloud and hybrid, and the vendor governance that keeps it all honest. We assess infrastructure from the physical plant up through systems, applications, and policy, then design and oversee what has to change.

  • Network and voice, converged on IP
  • Passive optical LAN (GPON)
  • Data center IT, cloud, and hybrid
  • Managed services and vendor governance
  • IT and OT convergence, and security
Explore Dataflow Technology
Practice two

Dataflow Real Estate & Facilities

Corporate real estate and portfolio, building operations, capital projects, the facilities side of the data center, and the smart-building systems on top of them. We bring an engineer's eye to the lease, the base building, and the systems that have to run inside it for the next ten years.

  • Corporate real estate and portfolio
  • Facilities and building operations
  • Data center build, the facilities side
  • Capital projects and smart building
  • Energy, workplace, and budgets
Explore Dataflow Real Estate & Facilities
How we work

One firm, one accountable principal.

Every engagement is led by the principal. When scope or schedule calls for more hands, we add specialists from a vetted network who work under our direction and to our standard.

01 Discover

What is actually there.

We start with the building, the racks, the cabling, the contracts, the people, and the policies, not the org chart. Most assessments fail because they trust the documentation. Ours trusts the floor.

02 Design

What it needs to become.

We design to the constraints we found, in your language, against your budget, with full traceability between requirement, decision, and cost. No vendor reference architectures dressed up as advice.

03 Oversee

Until it is built and proven.

We stay through procurement, implementation, and acceptance. The hand-off is to your operating team, not to a successor consultant. We are accountable for the result, not just the document.

You deal with one accountable party from the first meeting through acceptance. The result is a better decision made faster, with the cost and the regret of the wrong one taken off the table.
The principal
Tom Marsh

Tom Marsh

Tom Marsh founded Dataflow Management in 1998 and has run it as a full-time practice since 2002. Before that he led global enterprise engineering and infrastructure at Macromedia during its fastest growth, and field-office infrastructure across the Hitachi companies in North America. He has spent more than three decades working where the technology of an organization meets the buildings and people that depend on it.

Read the full bio

Contact

One firm. Global reach.

For new engagements, references, or a confidential conversation about a problem you are working on, get in touch.

The firm

T +1 888.391.6612

F +1 888.391.6613

E Info@DataflowMgmt.com

Tom Marsh, principal

T +1 617 335 3160

E Tom.Marsh@DataflowMgmt.com

In LinkedIn

Location

Andover, Massachusetts

Boston · Global

DataflowMgmt.com