If you work for EU clients, you are the one responsible for their data — even when you keep it in someone else's tool. Below: why data location matters, what GDPR says, and how to check an app before you upload a client's data into it.
When you upload a client's tasks, files and emails into a SaaS tool, you entrust that data to its provider. In GDPR language, this is a data controller–data processor relationship. Your responsibility doesn't disappear — someone else's infrastructure is simply added on top.
The key question: where does that data physically sit and who has legal access to it. Data in the EU is subject to GDPR. Data held by a US-based provider may also be subject to US law — including the CLOUD Act, which in certain situations allows US authorities to demand data stored by American companies, even when the servers stand in Europe.
In short, when using SaaS tools:
Before you upload a client's data, review the following on the provider's side:
| What to check | Where / how |
|---|---|
| Data location | Privacy policy / "Security" page — hosting region (EU vs US) |
| Data processing agreement (DPA) | Available to sign? By default, or only on higher plans? |
| Subprocessors | List of subcontractors and their locations |
| Transfer outside the EU | Whether it occurs and on what legal basis |
| Export and deletion | Whether you can download and permanently delete the data |
| Backups | Where backups sit, how long they are kept, whether they are protected against overwriting |
Keeping data in the EU simplifies GDPR formalities, but it also has harder benefits: a shorter legal path to the data, less risk of access by foreign authorities, and often lower latency for European users. Another good practice is offsite backups with write-lock (WORM) — once a backup is written, it cannot be overwritten or deleted for a set period of time, which protects against ransomware and human error.
That's why, when consolidating tools (topic: how many tools a small team needs), data location should be one of the criteria, alongside features and price.
You are responsible for a client's data, no matter which tool you keep it in. Before you choose an app, check where the data sits, whether you can get a data processing agreement, and how deletion and backups work. For work with EU clients, data in the EU and solid backups aren't a luxury — they're basic hygiene. You'll find comparisons of specific tools in the 2026 productivity tools review.