Slack

Easy chat with serious lock-in and US cloud processing.

Proprietary · https://slack.com

Chat

Slack cloud

Hosting: Global SaaS Reviewed

Export is possible on paid plans; culture still sticks to Slack.

Fair 1.7
Easy 4.7
Secure 3.0

FES Scores 9

Pillar	Criterion	Score	Evidence
Easy	Day-one UX Can non-technical staff use it without a project?	5	Almost no training needed. Source
Easy	Operate Admin burden, updates, backups and language coverage.	5	Salesforce operates it. Source
Easy	Integrate SSO, mail/CalDAV, APIs and common NGO connectors.	4	Many integrations; SSO on paid tiers. Source
Fair	Lock-in / exit Can you leave with your data in open formats, at known cost?	2	Rule baseline (rubric_v1): global SaaS APIs/export exist, but suite gravity and remapping remain. Source
Fair	Sovereignty EU legal entity, EU hosting, and exposure to extra-EU lawful access?	1	Rule baseline (rubric_v1): non-EU legal entity + global SaaS — high extra-EU lawful-access exposure. Source
Fair	Openness Open source or open standards? Are independent implementations possible?	2	Rule baseline (rubric_v1): proprietary / non-OSI license — openness capped unless open standards dominate. Source
Secure	IT security Authentication, encryption, patch cadence and independent audit.	4	Enterprise security features on higher plans. Source
Secure	User security 2FA, roles, phishing resistance and safe defaults.	3	2FA exists; workspace spam and phishing links are common. Source
Secure	Personal data GDPR fit: DPA, residency, sub-processors and Schrems II posture.	2	US processor; DPA does not remove CLOUD Act risk. Source

Indicative scores from public information — how we score.

Subprocessors 8

Name	Role	Residency	Verification date	Source
Amazon Web Services	Hosting	EU + abroad	23 Oct 2026	Source
Cloudflare	CDN	EU + abroad	23 Oct 2026	Source
Datadog	Other	EU + abroad	23 Oct 2026	Source
Fastly	CDN	EU + abroad	23 Oct 2026	Source
Google Cloud Platform	Hosting	EU + abroad	23 Oct 2026	Source
New Relic	Other	EU + abroad	23 Oct 2026	Source
SendGrid	Email	EU + abroad	23 Oct 2026	Source
Twilio SendGrid	Email	EU + abroad	23 Oct 2026	Source