When tech companies open offices in Dublin, Brussels, Singapore or Bengaluru, the choice can look like a map pin thrown at random. It almost never is. Each site is usually solving one specific problem, and several of those problems are now set out in law rather than in a business plan. This piece walks through what an office is actually for, the six reasons that account for most announcements, and the legal duties that make a physical presence in a region compulsory rather than optional.
Updated October 2026. General information about how these decisions are made, not legal or tax advice.
What a regional office is actually for
An office is a bundle of four different things: a place to employ people, a legal address a regulator can write to, a sales and support presence in a time zone, and sometimes a condition attached to running infrastructure in that country. A single building can serve all four, which is why one announcement often carries several justifications at once. It also explains why some offices are large engineering campuses and others are a handful of desks with a named compliance contact.
The useful habit is to ask which of the four a given site is for. A data centre region is not a sales office, and a Brussels address is not a research lab.
6 good reasons tech companies open offices
- Access to a specific labour market. Some skills cluster geographically, and hiring them means being in the city where they already live.
- A legal presence a regulator can reach. Several EU instruments require a named representative inside the Union for providers established elsewhere, which is a legal duty rather than a commercial preference.
- Proximity to the people writing the rules. The EU Transparency Register exists precisely because organisations seek to influence EU policy, and registration became effectively mandatory in 2021 for anyone in direct contact with the institutions.
- Market access and time zones. Enterprise sales and support contracts are easier to win and service with staff who share working hours and language with the customer.
- Data residency commitments. Promising customers that their data stays in a region means operating facilities in that region, and increasingly means documenting every exception.
- Tax and investment incentives. National agencies compete to attract investment, and the arithmetic has changed since the global minimum tax rules began to apply.
The legal reasons that are not optional
This is the part most coverage skips. Under Article 27 of the General Data Protection Regulation, a controller or processor not established in the EU must designate in writing a representative in the Union when it targets people there or monitors their behaviour, with narrow exemptions for occasional low risk processing and for public authorities. That representative must be established in a member state where affected individuals are, and can be addressed by supervisory authorities instead of the company itself.
The Digital Services Act goes further. Regulation (EU) 2022/2065 requires a single electronic point of contact under Article 11, and Article 13 requires providers established in third countries to designate a sufficiently mandated legal representative in the Union, publish the details and give them the powers and resources to cooperate with authorities. The EU AI Act adds a third layer: Article 22 requires providers outside the EU placing high risk systems on the market to appoint an authorised representative by written mandate, who keeps documentation for ten years and can be addressed in addition to or instead of the provider.
Read together, these mean a company serving European users with no European presence is not merely inconvenienced, it is out of compliance. That is one reason a small compliance office often appears before a large engineering one. Our explainer on the EU AI Act covers the timetable those obligations follow, and AI governance covers the internal machinery that has to sit behind them.
Tax, incentives and the global minimum rate
Location choices used to be shaped heavily by headline corporate tax rates. That lever has narrowed. The EU’s Minimum Corporate Taxation Directive, approved by the Council on 14 December 2022 and published in the Official Journal on 22 December 2022, implements the Pillar 2 rules agreed in the OECD and G20 Inclusive Framework. Member states were to transpose it by 31 December 2023 and apply it to fiscal years starting in January 2024. It covers groups with combined financial revenues above 750 million euro a year that have a presence in a member state, and where the effective rate in a jurisdiction falls below 15 percent, a top-up tax brings it back to 15 percent.
What remains is competition on everything other than the rate: grants, skills programmes, planning speed and introductions. Singapore’s Economic Development Board, a government agency under the Ministry of Trade and Industry, describes its own role as enhancing Singapore’s position as a global centre for business, innovation and talent, and lists investment facilitation, partner connections, access to government incentives and workforce development among the services it provides. Expect that kind of support to matter more now that the effective rate is partially fixed, which is also the logic behind the zones described in our piece on how special economic zones work.
Why data residency puts buildings on the map
A promise about where data lives turns into a promise about where machines live. Microsoft’s EU Data Boundary documentation is a clear worked example: it describes a geographically defined boundary within which the company commits to store and process customer data and personal data for Azure, Dynamics 365, Power Platform and Microsoft 365, with professional services data stored at rest. The boundary is defined as the EU member states plus the EFTA countries Liechtenstein, Iceland, Norway and Switzerland, and the documentation names the countries whose data centres may be used, from Ireland and the Netherlands to Greece, Poland and Switzerland.
Two details in that documentation recur across the industry. The commitment carries listed exceptions where data still moves outside the boundary, and personal data in system generated logs is required to be pseudonymised rather than removed, so engineers can keep services running without reidentifying users. A residency claim is a specific technical arrangement, not a slogan.
How to read the next office announcement
- Check the job titles, not the headcount. Compliance and public policy roles signal a regulatory purpose; research and platform engineering signal a talent purpose.
- Check whether a data centre is mentioned. Residency commitments need facilities, and facilities need a different kind of approval from an office lease.
- Check the city. Brussels and Washington are institutional before they are commercial.
- Check whether a representative is named. A named EU representative is a legal artefact with a defined role.
- Check what the host government said. Investment agencies publish their side, and the two statements rarely emphasise the same thing.
The pattern also runs in reverse. When a government restricts an app on official devices, as covered in our piece on why governments ban apps on official devices, a local legal presence becomes one of the few remaining levers a regulator has.
Common questions
Why do tech companies open offices in small countries? Usually for one of three reasons: a specific skills pool, a legal or regulatory presence required to serve a region, or infrastructure and residency commitments. Headline tax rates matter less than they did now that the Pillar 2 minimum applies.
Is a European office legally required? A physical office is not always required, but a representative is. GDPR Article 27, Digital Services Act Article 13 and EU AI Act Article 22 each require a designated representative or legal representative in the Union for providers established outside it.
What is the 15 percent minimum tax? Under the EU Minimum Corporate Taxation Directive implementing Pillar 2, groups with combined revenues above 750 million euro a year pay a top-up tax where their effective rate in a jurisdiction falls below 15 percent. It applies to fiscal years from January 2024.
Why open an office in Brussels specifically? Because the institutions are there. The EU Transparency Register lists interest representatives seeking to influence EU policy, and since 2021 registration has been effectively mandatory for anyone in direct contact with the institutions, including for access to their premises.
Does data residency mean my data never leaves? Not automatically. Microsoft’s EU Data Boundary documentation commits to storing and processing covered data inside the EU and EFTA countries but also documents the limited circumstances in which transfers still occur.
Sources and further reading
Where the figures and rules above come from, so you can check them:
- Article 27, representative in the Union: GDPR text
- Articles 11 and 13, contact point and legal representative: Regulation (EU) 2022/2065, EUR-Lex
- Article 22, authorised representatives: EU Artificial Intelligence Act text
- Minimum Corporate Taxation Directive, scope, rate and dates: European Commission
- Who must register and what must be disclosed: EU Transparency Register
- Boundary scope, countries and log pseudonymisation: Microsoft EU Data Boundary documentation
- Role and investment facilitation: Singapore Economic Development Board
Photo credit: Münster, Westdeutsche Lotterie — 2018 — 0417 by Dietmar Rabich, CC BY-SA 4.0, via Wikimedia Commons.
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