{"id":3824,"date":"2026-10-05T20:21:20","date_gmt":"2026-10-05T18:21:20","guid":{"rendered":"https:\/\/www.klytic.com\/?page_id=3824"},"modified":"2026-10-06T10:38:10","modified_gmt":"2026-10-06T08:38:10","slug":"microsoft-365-vs-sovereign-solution","status":"publish","type":"page","link":"https:\/\/www.klytic.com\/en\/microsoft-365-vs-sovereign-solution\/","title":{"rendered":"Microsoft 365 or a European sovereign solution"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"3824\" class=\"elementor elementor-3824 elementor-3745\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-94ed45b e-con-full kly-g e-flex e-con e-parent\" data-id=\"94ed45b\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-7bcfbc2 e-con-full kly-g-hero e-flex e-con e-parent\" data-id=\"7bcfbc2\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-897910e e-con-full kly-g-hero-in e-flex e-con e-parent\" data-id=\"897910e\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3b450e8 elementor-widget elementor-widget-text-editor\" data-id=\"3b450e8\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"kly-g-crumb\"><a href=\"\/en\/\">Home<\/a><span>\u203a<\/span><a href=\"\/en\/guides\/\">Guides<\/a><span>\u203a<\/span><a href=\"\/en\/guides\/#comparatifs\">Comparisons<\/a><\/p><p class=\"kly-g-pill\" style=\"--pill:#a78bfa\">Comparisons<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6506c01 elementor-widget elementor-widget-heading\" data-id=\"6506c01\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Microsoft 365 or a European sovereign solution<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5ef4ee3 elementor-widget elementor-widget-text-editor\" data-id=\"5ef4ee3\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"kly-g-lead\">Microsoft 365 remains the sound choice when your lines of business genuinely use the breadth of the suite. A solution operated in Europe becomes the sound choice when you want a European company to hold your emails and files, and your usage fits within a narrower scope. Both statements can be true at the same time, for two different departments of the same company.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-75cba90 elementor-widget elementor-widget-text-editor\" data-id=\"75cba90\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"kly-g-meta\"><span>Updated <b>October 2026<\/b><\/span><span><b>10 min<\/b> read<\/span><span>Official sources cited<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d26aa92 e-con-full kly-g-body e-flex e-con e-parent\" data-id=\"d26aa92\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-aaa2c45 e-con-full kly-g-article e-flex e-con e-parent\" data-id=\"aaa2c45\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-90b89a8 elementor-widget elementor-widget-text-editor\" data-id=\"90b89a8\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>What Microsoft 365 provides, and that the alternatives do not match as a whole<\/h2><p>Each of the following points is a rational reason to stay, at least for part of the company.<\/p><ul><li><strong>Excel<\/strong>, for workbooks that go beyond the simple table: macros, add-ins, financial models. A macro-enabled model opens elsewhere; it does not necessarily run there.<\/li><li><strong>Power BI and the Power Platform ecosystem<\/strong>, when processes are already written in them. An expense report approval workflow is an application: moving it means rewriting it.<\/li><li><strong>Teams<\/strong>, when customers and suppliers are on it. The shared channel with a client is not always negotiable.<\/li><li><strong>Integration with an information system already built around Entra ID, SharePoint and business applications.<\/strong> Identity is the most underestimated point: every application that signs in with the Microsoft account will have to be reconnected if the directory changes.<\/li><li><strong>Installed office software, not just a browser tab.<\/strong> Working offline, on a building site or on a train.<\/li><\/ul><p>A \u201csovereign solution\u201d that promises the same scope without reservation is overselling its product. European and Swiss suites cover email, files, video and sometimes chat. They do not replace that island.<\/p><h3>Why staying is often rational<\/h3><p>The cost of a change is not limited to the subscription: training, reworking templates, integrations to reconnect, a period of lower productivity. If the reason for leaving is a slogan, nothing offsets that cost.<\/p><p><strong>Example.<\/strong> A 25-person accounting firm runs its audit files on macro-enabled Excel workbooks. Leaving Microsoft 365 wholesale would be a mistake. The useful question is narrower: should general email and the exchange of documents with clients remain with the same operator as the workbooks?<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a168afd elementor-widget elementor-widget-text-editor\" data-id=\"a168afd\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>What Microsoft 365 does not change<\/h2><p>Microsoft is an American company. The EU Data Boundary, for eligible tenants, keeps customer data and pseudonymised personal data within the EU or EFTA, with documented exceptions: support, certain escalations, optional features. A Multi-Geo tenant is not covered, according to Microsoft. This answers part of the question \u201cwhere are the disks\u201d. It does not answer the question \u201cwho can be compelled, in the United States, to produce data it controls\u201d.<\/p><p>The provision resulting from the CLOUD Act (18 U.S.C. \u00a7 2713) targets data that the provider holds or controls, including outside the United States. Article 48 of the GDPR, for its part, recognises a third-country decision requiring the disclosure of personal data only if it is based on an international agreement, such as a mutual legal assistance treaty, in force with the Union or the Member State. An American provider operating in Europe may therefore find itself caught between two laws, without the outcome of any specific case being written in advance.<\/p><p>On 10 June 2025, before the French Senate commission of inquiry on public procurement, the director of public and legal affairs of Microsoft France was asked whether he could guarantee under oath that the data of French citizens entrusted to Microsoft via Ugap would never be transmitted, following an injunction from the American government, without the explicit consent of the French authorities. His answer: \u201cNo, I cannot guarantee it, but, once again, it has never happened yet.\u201d Both halves of the sentence matter, and each management team weighs them.<\/p><p>Then there is the legal basis for transfers. As of 5 October 2026, adequacy decision (EU) 2023\/1795 is in force. It is being challenged, as noted in commentary by law firms (DAC Beachcroft, WilmerHale); according to WilmerHale, the General Court of the European Union dismissed an action for annulment on 3 September 2025, and an appeal was lodged before the Court of Justice on 31 October 2025. The details are in <a href='\/en\/protect-business-cloud-act\/'>protecting a company from the CLOUD Act<\/a> and in <a href='\/en\/gdpr-microsoft-365\/'>GDPR and Microsoft 365<\/a>.<\/p><p>Staying on Microsoft 365 is therefore not a \u201cnon-compliant\u201d choice: the DPA, data residency and the record of transfers make it possible to document it. It is a choice that accepts an operator subject to two legal systems. It is a decision for management, not only for the IT department.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-254d142 elementor-widget elementor-widget-text-editor\" data-id=\"254d142\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>What a European solution provides<\/h2><p><strong>From a legal standpoint.<\/strong> An operator governed by European law. A contract whose court is European. If this operator does not depend on an American group for holding the data, nor on American processors, the injunction provided for by the CLOUD Act is not addressed to it. It remains subject to the law of its own country: this is a change of jurisdiction, not immunity. Ask for the list of processors (backups, support, email sending), the location of the people who access the data, and who holds the encryption keys.<\/p><p><strong>From an operational standpoint.<\/strong> Support that is not, by design, that of an American group. Depending on the offer: hosting in France, in Germany, or on your premises. Also depending on the offer: the option of taking only email. A narrow scope is simpler to describe in the record of processing and to audit.<\/p><p><strong>What it does not automatically provide.<\/strong> A SecNumCloud qualification: that applies to a specific offer in the ANSSI catalogue. Since version 3.2 of its framework (2022), SecNumCloud includes requirements for protection against non-European laws (registered office, control of capital, location, staff); a word on a brochure is no substitute. Nor equivalent office software, nor an invisible migration away from Teams. Finally, the software vendor may remain foreign (Zimbra is published in the United States): the contract must state that the software vendor does not access the content.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ad4f853 elementor-widget elementor-widget-text-editor\" data-id=\"ad4f853\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Mixed scenarios<\/h2><p>The choice is not binary. Three configurations are common.<\/p><p><strong>Keep a Microsoft island for one line of business, move general email out.<\/strong> An industrial SME with two sites keeps Microsoft 365 licences for finance and the engineering department; the workshop, sales and administration move to email and file sharing operated in Europe. You then have to handle two directories, the routing of a single domain between two systems, cross-system calendar invitations, and a written rule: which data goes where. The common mistake is to let everyone choose as they go.<\/p><p><strong>Keep the suite and place a filter in front of it.<\/strong> If the decision about the operator is not yet ripe but phishing is pressing, an MTA placed in front of Exchange filters incoming mail without touching the mailboxes. The content, however, remains with Microsoft. This is a security measure, not a change of operator.<\/p><p><strong>Leave in stages.<\/strong> Email first, because it relies on standard protocols; then files; Teams for as long as customers require it. Each stage is judged on its results before committing to the next. The pages <a href='\/en\/migrate-from-microsoft-365\/'>migrating from Microsoft 365<\/a> and <a href='\/en\/migrate-email-without-downtime\/'>migrating without downtime<\/a> describe the order of operations.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6b41a3f elementor-widget elementor-widget-text-editor\" data-id=\"6b41a3f\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>How to decide without slogans<\/h2><div class='kly-table'><table><thead><tr><th>If the following statement is true<\/th><th>Direction<\/th><\/tr><\/thead><tbody><tr><td>Teams produce their work in advanced Excel or Power BI<\/td><td>Keep Microsoft 365 for those teams<\/td><\/tr><tr><td>Customers and suppliers require Teams<\/td><td>Keep Teams, or be prepared to offer them another channel<\/td><\/tr><tr><td>The general need is email, files and online editing of them, video conferencing, a CRM, a telephone<\/td><td>An \u00e0 la carte European suite is suitable<\/td><\/tr><tr><td>The call for tenders requires an offer that is specifically SecNumCloud-qualified<\/td><td>Choose that offer from the ANSSI catalogue, not an email service that uses the word \u201csovereign\u201d<\/td><\/tr><tr><td>You want a filter in front of the mailboxes, without leaving Exchange<\/td><td>An MTA placed in front of Microsoft 365 is enough. The suite can stay<\/td><\/tr><tr><td>Management wants a European company to hold everyday emails and files<\/td><td>Move general email and files out, keep an island for the lines of business that need it<\/td><\/tr><tr><td>The tenant is Multi-Geo, or Copilot and connectors are enabled<\/td><td>Read the EU Data Boundary exceptions before concluding that residency is enough<\/td><\/tr><tr><td>The parent company mandates Entra ID and its applications<\/td><td>Keep Microsoft 365; the question is dealt with at group level<\/td><\/tr><tr><td>Nobody in-house can administer a server<\/td><td>Choose an operator that runs the service, not software to install yourself<\/td><\/tr><\/tbody><\/table><\/div><p>If two contradictory rows are true for you, the answer is almost always a mixed scenario.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f9ae1c9 elementor-widget elementor-widget-text-editor\" data-id=\"f9ae1c9\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>A trial method<\/h2><ol><li><strong>Take inventory.<\/strong> Ten tasks from the week per line of business, and the tool that does them today. The method is detailed in <a href='\/en\/microsoft-365-google-workspace-or-klytic\/'>Microsoft 365, Google Workspace or Klytic<\/a>.<\/li><li><strong>Choose a representative pilot department<\/strong>, not the most enthusiastic one: sales administration, for example, which deals a great deal with outside parties.<\/li><li><strong>Do real work on the target for two weeks<\/strong>: large attachments, invitations with external parties, shared mailboxes, mobile, the usual email client.<\/li><li><strong>Note what breaks, what gets in the way and what improves<\/strong>, with the name of the task.<\/li><li><strong>Test an export and a restore.<\/strong> An exit that has never been tried is not an exit.<\/li><li><strong>Decide line of business by line of business.<\/strong><\/li><\/ol><p>The common mistake is to entrust the trial to the IT department alone: it validates the technology, not the usage. A <a href='\/en\/30-day-free-trial\/'>free trial<\/a> serves this purpose.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b7eda88 elementor-widget elementor-widget-text-editor\" data-id=\"b7eda88\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Frequently asked questions<\/h2><h3>Is Microsoft 365 GDPR-compliant?<\/h3><p>It can be used within a GDPR framework. The regulation does not prohibit American software vendors; it requires a DPA covering the services enabled, a legal basis for transfers and an up-to-date record. The nationality of the operator is a separate decision. See <a href='\/en\/gdpr-microsoft-365\/'>GDPR and Microsoft 365<\/a>.<\/p><h3>Does the EU Data Boundary answer the CLOUD Act question?<\/h3><p>No. It describes where certain data is stored and processed. The CLOUD Act targets the provider that holds or controls the data, wherever the disk is located.<\/p><h3>Can we keep Excel and Teams while moving email out?<\/h3><p>Yes, by keeping licences for the people who need them. Check beforehand what happens to calendars, Teams meetings scheduled from the email system, and shared mailboxes.<\/p><h3>Is a sovereign solution necessarily SecNumCloud-qualified?<\/h3><p>No. SecNumCloud qualifies a specific offer in the ANSSI catalogue. An email service operated in Europe can be relevant without it, unless your call for tenders requires it.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1bca4bd kly-g-klytic elementor-widget elementor-widget-text-editor\" data-id=\"1bca4bd\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Where Klytic fits in this choice<\/h2><p>Klytic is one of the possible European solutions, not the only answer. Operated by Dedicace Software, a French company, it is suitable if you want to combine email, documents (a dedicated Nextcloud instance per customer, not a shared space, with sharing, online editing alone or collaboratively, and version history), video conferencing, CRM and telephony. Hosting in any geographical area matching the applicable jurisdiction, subject to the availability of the required services, for example in Europe or in Mauritius, or on the customer\u2019s servers.<\/p><ul><li><strong>\u00c0 la carte.<\/strong> Klytic Mail, Docs, CRM, Tel and MTA can be purchased separately. You can keep Microsoft 365 and add only the filtering placed in front of it; CEO fraud protection belongs to its advanced level.<\/li><li><strong>Email.<\/strong> Zimbra, published by Synacor (United States), operated by Klytic. Web, email clients, mobile devices, EAS and EWS.<\/li><li><strong>Data.<\/strong> Held by the customer, or by Klytic on its behalf, in an area that falls under the applicable jurisdiction; encrypted natively or according to the customer\u2019s choice. The key is held by the customer or kept in the customer\u2019s account, and Klytic has no access to it. The steps where encryption is managed by Klytic are detailed on the page <a href='\/en\/protect-business-cloud-act\/'>protecting a company from the CLOUD Act<\/a>. The contract must describe this holding and this encryption.<\/li><li><strong>Backups.<\/strong> Email, documents and CRM every hour, telephony every day, 30-day retention.<\/li><li><strong>Email migration.<\/strong> Free advice, no email lost; migration carried out by Klytic on quotation, after an inventory, invoiced separately from the subscription. Subscription prices: <a href='\/en\/pricing\/'>Pricing<\/a> page.<\/li><li><strong>Support.<\/strong> By phone in French and in all languages by email, through a ticket tracking tool. Existing tools: native connection, third-party tool, or development on quotation.<\/li><\/ul><p>It is not suitable if the project is about finding Office again: it does not replace advanced Excel, Power BI or Teams. Klytic is not SecNumCloud-qualified, and a French operator remains subject to French law. The overview of other players is the <a href='\/en\/european-alternatives-microsoft-365\/'>2026 guide<\/a>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-caf6979 kly-g-disclaimer elementor-widget elementor-widget-text-editor\" data-id=\"caf6979\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>This page describes a general framework. It does not constitute legal advice.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d2de99e kly-g-sources elementor-widget elementor-widget-text-editor\" data-id=\"d2de99e\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Sources<\/h2><p>Accessed in October 2026.<\/p><ul><li>Microsoft, EU Data Boundary and exceptions. <a href='https:\/\/learn.microsoft.com\/en-us\/privacy\/eudb\/eu-data-boundary-learn' rel='noopener' target='_blank'>Microsoft Learn<\/a> and <a href='https:\/\/learn.microsoft.com\/en-us\/privacy\/eudb\/eu-data-boundary-transfers-for-all-services' rel='noopener' target='_blank'>residual transfers<\/a><\/li><li>18 U.S.C. \u00a7 2713. <a href='https:\/\/www.govinfo.gov\/content\/pkg\/USCODE-2023-title18\/html\/USCODE-2023-title18-partI-chap121-sec2713.htm' rel='noopener' target='_blank'>govinfo<\/a><\/li><li>Regulation (EU) 2016\/679, Article 48. <a href='https:\/\/eur-lex.europa.eu\/legal-content\/FR\/TXT\/?uri=CELEX:32016R0679' rel='noopener' target='_blank'>EUR-Lex<\/a><\/li><li>French Senate, commission of inquiry on public procurement, hearing of 10 June 2025. <a href='https:\/\/www.senat.fr\/compte-rendu-commissions\/20250609\/ce_commande_publique.html' rel='noopener' target='_blank'>Report for the week of 9 June 2025<\/a><\/li><li>Decision (EU) 2023\/1795. <a href='https:\/\/eur-lex.europa.eu\/legal-content\/FR\/TXT\/?uri=CELEX:32023D1795' rel='noopener' target='_blank'>EUR-Lex<\/a><\/li><li>On the Data Privacy Framework litigation, commentary by law firms, not rulings: DAC Beachcroft, \u201cThe EU\u2013US Data Privacy Framework: stability for now, uncertainty ahead\u201d. <a href='https:\/\/www.dacbeachcroft.com\/en\/What-we-think\/The-EU-US-Data-Privacy-Framework-Stability-for-now-uncertainty-ahead' rel='noopener' target='_blank'>dacbeachcroft.com<\/a>; WilmerHale, \u201cEuropean Court of Justice to Review Challenge to EU-U.S. Data Privacy Framework\u201d, 1 December 2025. <a href='https:\/\/www.wilmerhale.com\/en\/insights\/blogs\/wilmerhale-privacy-and-cybersecurity-law\/20251201-european-court-of-justice-to-review-challenge-to-eu-us-data-privacy-framework' rel='noopener' target='_blank'>wilmerhale.com<\/a><\/li><li>ANSSI, SecNumCloud FAQ: one offer, one scope, not a company; requirements regarding non-European laws since version 3.2. <a href='https:\/\/cyber.gouv.fr\/enjeux-technologiques\/cloud\/faq-qualification-secnumcloud\/' rel='noopener' target='_blank'>cyber.gouv.fr<\/a><\/li><li>Zimbra, FAQ. <a href='https:\/\/www.zimbra.com\/faqs\/' rel='noopener' target='_blank'>zimbra.com\/faqs<\/a><\/li><li>Klytic, services, hosting and migration commitment. <a href='\/en\/'>klytic.com<\/a> and <a href='\/en\/pricing\/'>Pricing<\/a><\/li><li>Klytic, backup frequency and retention period. <a href='\/en\/frequently-asked-questions\/'>Frequently asked questions<\/a><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-daca912 e-con-full kly-g-aside e-flex e-con e-parent\" data-id=\"daca912\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-956e37b elementor-widget elementor-widget-html\" data-id=\"956e37b\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<nav class=\"kly-g-toc\" aria-label=\"Contents\"><p>On this page<\/p><ol><\/ol><\/nav>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-60d7bab elementor-widget elementor-widget-text-editor\" data-id=\"60d7bab\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"kly-g-cta\"><h3>Compare on your real usage<\/h3><p>Try Klytic for 30 days on your own email and files, with no commitment.<\/p><p><a class=\"kly-g-btn\" href=\"\/en\/30-day-free-trial\/\">30-day free trial \u2192<\/a><\/p><p style=\"margin:0\"><a class=\"kly-g-btn ghost\" href=\"\/en\/klytic-vs-microsoft-365-and-google-workspace\/\">The comparison table<\/a><\/p><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c49a9bc e-con-full kly-g-related e-flex e-con e-parent\" data-id=\"c49a9bc\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;ekit_has_onepagescroll_dot&quot;:&quot;yes&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5880f34 elementor-widget elementor-widget-text-editor\" data-id=\"5880f34\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;ekit_we_effect_on&quot;:&quot;none&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>Read next<\/h2><div class=\"kly-g-grid\"><a class=\"kly-g-card\" href=\"\/en\/google-workspace-vs-sovereign-solution\/\" style=\"--cat:#6d28d9\"><span class=\"c\">Comparisons<\/span><span class=\"t\">Google Workspace or a European sovereign solution<\/span><span class=\"q\">Google Workspace remains relevant for online editing. A European operator is, when who holds the files comes first. Criteria, scenarios, trial.<\/span><span class=\"m\"><span>8 min read<\/span><b>Read \u2192<\/b><\/span><\/a><a class=\"kly-g-card\" href=\"\/en\/european-alternatives-microsoft-365\/\" style=\"--cat:#6d28d9\"><span class=\"c\">Comparisons<\/span><span class=\"t\">European alternatives to Microsoft 365: 2026 guide<\/span><span class=\"q\">Selection criteria, then Microsoft 365, Google Workspace, OVHcloud, Nextcloud, Infomaniak, other players and Klytic. When each one is relevant.<\/span><span class=\"m\"><span>18 min read<\/span><b>Read \u2192<\/b><\/span><\/a><a class=\"kly-g-card\" href=\"\/en\/migrate-from-microsoft-365\/\" style=\"--cat:#0e7490\"><span class=\"c\">Migration<\/span><span class=\"t\">Migrating from Microsoft 365 to a European solution<\/span><span class=\"q\">What migrates from Microsoft 365, what does not, the order of operations and coexistence. A method, without promising a Teams equivalent.<\/span><span class=\"m\"><span>8 min read<\/span><b>Read \u2192<\/b><\/span><\/a><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-47ba7642 e-con e-atomic-element e-div-block-base e-default-div e-47ba7642-0a8d8cb \" data-id=\"47ba7642\" data-element_type=\"e-div-block\" data-e-type=\"e-div-block\" data-interaction-id=\"47ba7642\" data-e-type=\"e-div-block\" data-id=\"47ba7642\">\n    <div class=\"elementor-element elementor-element-1957dcf0 e-con e-atomic-element e-div-block-base e-default-div e-1957dcf0-65bb45b \" data-id=\"1957dcf0\" data-element_type=\"e-div-block\" data-e-type=\"e-div-block\" data-interaction-id=\"1957dcf0\" data-e-type=\"e-div-block\" data-id=\"1957dcf0\">\n    \t\t\t<p class=\"e-34902a51-b78d132 e-paragraph-base e-default-p\" data-interaction-id=\"34902a51\" data-e-type=\"widget\" data-id=\"34902a51\">Welcome offer<\/p>\n\t\t\t\t\t<h2 data-interaction-id=\"54c96233\" class=\"e-54c96233-632171d e-heading-base e-default-h2\" data-e-type=\"widget\" data-id=\"54c96233\">30 days free trial, migration support included<\/h2>\n\t\t\t\t\t<p class=\"e-6661c7ce-fdde46c e-paragraph-base e-default-p\" data-interaction-id=\"6661c7ce\" data-e-type=\"widget\" data-id=\"6661c7ce\">No-commitment trial. An advisor calls you back to understand your needs and prepare your Klytic workspace.<\/p>\n\t\t<div class=\"elementor-element elementor-element-761c01f e-con e-atomic-element e-div-block-base e-default-div e-761c01f-cf11a99 \" data-id=\"761c01f\" data-element_type=\"e-div-block\" data-e-type=\"e-div-block\" data-interaction-id=\"761c01f\" data-e-type=\"e-div-block\" data-id=\"761c01f\">\n    \t\t\t<a href=\"https:\/\/www.klytic.com\/en\/30-day-free-trial\/\" target=\"_self\" class=\"e-2f43419f-52885cf e-button-base e-default-a\" data-interaction-id=\"2f43419f\" data-e-type=\"widget\" data-id=\"2f43419f\">\n\t\ud83d\ude80 Start the free trial\n<\/a>\n\t\t\t\t\t<a href=\"https:\/\/www.klytic.com\/en\/pricing\/\" target=\"_self\" class=\"e-31327e4d-45bbc1a e-button-base e-default-a\" data-interaction-id=\"31327e4d\" data-e-type=\"widget\" data-id=\"31327e4d\">\n\tSee pricing\n<\/a>\n\t\t\n<\/div>\n\n<\/div>\n\n<\/div>\n\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Accueil\u203aGuides\u203aComparatifs Comparatifs Microsoft 365 ou une solution souveraine europ\u00e9enne Microsoft 365 reste le choix solide lorsque vos m\u00e9tiers utilisent vraiment la largeur de la suite. Une solution exploit\u00e9e en Europe devient le choix solide lorsque vous voulez qu\u2019une soci\u00e9t\u00e9 europ\u00e9enne d\u00e9tienne les mails et les fichiers, et que vos usages tiennent dans un p\u00e9rim\u00e8tre plus [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"_seopress_titles_title":"Microsoft 365 or a European sovereign solution | Klytic","_seopress_titles_desc":"Staying on Microsoft 365 is often justified. Leaving is, when the operator matters more than suite breadth. 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