{"id":24660,"date":"2022-09-28T00:00:00","date_gmt":"2022-09-28T00:00:00","guid":{"rendered":"https:\/\/www.mailgun.com\/blog\/cloud-ou-sur-site\/"},"modified":"2026-09-16T19:10:04","modified_gmt":"2026-09-16T19:10:04","slug":"cloud-ou-sur-site","status":"publish","type":"blog","link":"https:\/\/www.mailgun.com\/fr\/blog\/it-and-engineering\/cloud-ou-sur-site\/","title":{"rendered":"S\u00e9curit\u00e9 des emails et infrastructure\u00a0: cloud ou sur site"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">You could argue that cloud-based infrastructure is the natural evolution of on-premise software, but that might make some people angry. Whether you think of on-premise solutions as legacy dinosaurs, or as the end-all solution for maintaining security, we\u2019re here to compare where we\u2019ve been to where we\u2019re going and break down the benefits of the cloud.<\/p>\n\r\n    <nav data-content-type=\"longform\" class=\"toc-block longform-spacings px-5 py-6 px-md-6 px-lg-7 py-md-7 bg-light fs-sm rounded-lg\" aria-labelledby=\"toc-title-4782\"><p class=\"h5 m-0\" id=\"toc-title-4782\">Table des mati\u00e8res<\/p><div class=\"d-flex mt-3\"><div class=\"w-auto fw-bold text-accent d-flex me-2\">01<\/div><div class=\"d-flex flex-column\"><a class=\"fw-bold scrollme link-body-color text-accent\" href=\"#what-is-the-cloud\">What is the cloud?<\/a><a class=\"scrollme link-body-color\" href=\"#lightning-round-a-quick-history-of-the-cloud\">Lightning round: A quick history of the cloud<\/a><a class=\"scrollme link-body-color\" href=\"#types-of-cloud-based-solutions\">Types of cloud-based solutions<\/a><\/div><\/div><div class=\"d-flex mt-3\"><div class=\"w-auto fw-bold text-accent d-flex me-2\">02<\/div><div class=\"d-flex flex-column\"><a class=\"fw-bold scrollme link-body-color text-accent\" href=\"#what-is-on-premise\">What is on-premise?<\/a><a class=\"scrollme link-body-color\" href=\"#on-premises-requirements\">On premises requirements<\/a><\/div><\/div><div class=\"d-flex mt-3\"><div class=\"w-auto fw-bold text-accent d-flex me-2\">03<\/div><div class=\"d-flex flex-column\"><a class=\"fw-bold scrollme link-body-color text-accent\" href=\"#pros-and-cons-of-on-premise-vs-cloud-based-infrastructure\">Pros and cons of on-premise vs cloud-based infrastructure<\/a><a class=\"scrollme link-body-color\" href=\"#when-to-choose-the-cloud\">When to choose the cloud<\/a><a class=\"scrollme link-body-color\" href=\"#when-to-choose-on-premises\">When to choose on-premises<\/a><\/div><\/div><div class=\"d-flex mt-3\"><div class=\"w-auto fw-bold text-accent d-flex me-2\">04<\/div><div class=\"d-flex flex-column\"><a class=\"fw-bold scrollme link-body-color text-accent\" href=\"#on-premise-vs-cloud-is-on-prem-more-secure\">On-premise vs cloud: Is on-prem more secure?<\/a><a class=\"scrollme link-body-color\" href=\"#data-security-and-data-storage\">Data security and data storage<\/a><a class=\"scrollme link-body-color\" href=\"#email-and-security\">Email and security<\/a><a class=\"scrollme link-body-color\" href=\"#security-and-scalability\">Security and scalability<\/a><\/div><\/div><div class=\"d-flex mt-3\"><div class=\"w-auto fw-bold text-accent d-flex me-2\">05<\/div><div class=\"d-flex flex-column\"><a class=\"fw-bold scrollme link-body-color text-accent\" href=\"#cloud-based-infrastructure-to-power-your-email-program\">Cloud-based infrastructure to power your email program<\/a><\/div><\/div><\/nav>\n<h2 class=\"wp-block-heading\">What is the cloud?<\/h2>\n\n<p class=\"wp-block-paragraph\">Short answer? It\u2019s a global server network.<\/p>\n\n<p class=\"wp-block-paragraph\"><b>Cloud-based means that your data is hosted off-site and on servers and in global data centers owned by cloud providers.<\/b> Is it secure? Is it accessible? How does this work? To paraphrase PBS, the cloud was made possible by users like you.<\/p>\n\n<h3 class=\"wp-block-heading\">Lightning round: A quick history of the cloud<\/h3>\n\n<p class=\"wp-block-paragraph\">In the beginning \u2013 a.k.a. the 1960s \u2013 there were mainframes, which were massive machines that large groups of people shared. Imagine having to stand in line to check your email, let alone perform any advanced computations. Then, to make a long story short, we got personal computers that could connect to network servers remotely, and mainframes evolved into server rooms, which evolved into massive data centers that started to rent out their resources, and that became the public cloud.<\/p>\n\n<p class=\"wp-block-paragraph\">A personal computer doesn\u2019t have the capacity to operate and host large IT infrastructure on its own and buying your servers at the volume you need can get expensive. The solution is cloud infrastructure. Providers like <a href=\"https:\/\/www.salesforce.com\/\" target=\"_tabs\" rel=\"noopener noreferrer\">Salesforce<\/a>, <a href=\"https:\/\/aws.amazon.com\/what-is-aws\/#:~:text=Amazon%20Web%20Services%20(AWS)%20is,services%20from%20data%20centers%20globally.\" target=\"_tabs\" rel=\"noopener noreferrer\">Amazon Web Services (AWS)<\/a>, or <a href=\"https:\/\/azure.microsoft.com\/en-us\/\" target=\"_tabs\" rel=\"noopener noreferrer\">Microsoft Azure<\/a> have stacks on stacks of servers in data centers worldwide that you can access. <b>Cloud solutions are pay-as-you-go models that allow you to do things like rent data storage, host software, and perform advanced computing.<\/b><\/p>\n\n<h3 class=\"wp-block-heading\">Types of cloud-based solutions<\/h3>\n\n<p class=\"wp-block-paragraph\">There\u2019s more than one type of cloud; cumulus, cirrus, light and fluffy\u2026 Here are the three types of cloud service providers.<\/p>\n\n<ul class=\"wp-block-list\">\n<li><b>Infrastructure as a service (IaaS):<\/b> IaaS providers rent access to utilities like servers, cloud computing, virtual machines (VMs), and cloud storage.<\/li>\n\n\n\n<li><b>Platform as a service (PaaS):<\/b> PaaS providers (like yours truly) are cloud platforms that use on-demand models for software development, testing, application management, and sending emails, of course.<\/li>\n\n\n\n<li><b>Software as a service (SaaS):<\/b> SaaS solutions are subscription based, cloud-hosted software solutions. Tools like Adobe Creative Cloud and Zendesk fall into this category.<\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\">What is on-premise?<\/h2>\n\n<p class=\"wp-block-paragraph\">Short answer? It\u2019s on-site infrastructure.<\/p>\n\n<p class=\"wp-block-paragraph\"><b>On-premise is the in-house solution of owning and operating independent servers to host your own infrastructure<\/b> and refers to any on-site server hardware or software. If you close your eyes and picture any hacker movie that predates the mid-1990s, <i>that<\/i> is on-premise \u2013 a large, extra cold room containing towers of stacked servers in the belly of the company HQ.<\/p>\n\n<h3 class=\"wp-block-heading\">On premises requirements<\/h3>\n\n<p class=\"wp-block-paragraph\">With great power comes great responsibility. And servers require a lot of power. To understand on-premise data centers, we first need to look at the resources they need:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>Number of racks<\/li>\n\n\n\n<li>Number of servers per rack<\/li>\n\n\n\n<li>Square footage utilized<\/li>\n\n\n\n<li>Your building\u2019s voltage capacity (VAC)<\/li>\n\n\n\n<li>Cooling system<\/li>\n\n\n\n<li>Power supply for your servers<\/li>\n\n\n\n<li>Production load<\/li>\n\n\n\n<li>Computing resources<\/li>\n\n\n\n<li>Kilowatts per server<\/li>\n\n\n\n<li>Data backup solutions (on-site and off-site)<\/li>\n\n\n\n<li>APC batteries<\/li>\n\n\n\n<li>Server and software licenses<\/li>\n\n\n\n<li>Server maintenance costs<\/li>\n\n\n\n<li>On-site security<\/li>\n<\/ul>\n\n<p class=\"wp-block-paragraph\">This isn\u2019t a complete list by a long shot, but it gives you an idea of the amount of physical infrastructure needed to support on-premises. Once you\u2019ve figured out all your variables you can do some fancy calculations to determine things like how many watts you need per square foot to power your servers (the current average is somewhere <a href=\"https:\/\/www.datacenterknowledge.com\/power-and-cooling\/new-workloads-cost-pressures-drive-data-center-power-densities#:~:text=For%20colocation%20providers%2C%20the%20typical,Engineering%2C%20an%20engineering%20services%20provider.\" target=\"_tabs\" rel=\"noopener noreferrer\">between 250-300 watts<\/a>). That\u2019s <i>quite<\/i> the energy bill.<\/p>\n\n<p class=\"wp-block-paragraph\">We\u2019re not here to be the pricing police \u2013 we\u2019re here to talk cloud vs on-premise security \u2013 but just a single server without the building, the racks, cooling, hardware, installation, maintenance, or anything else, costs <a href=\"https:\/\/www.servermania.com\/kb\/articles\/how-much-does-a-server-cost-for-a-small-business\" target=\"_tabs\" rel=\"noopener noreferrer\">between $1000-$4000 in 2023<\/a>, and you\u2019ll need more than one. The takeaway? Total infrastructure control may not be cost effective.<\/p>\n\n<p class=\"wp-block-paragraph\">At the climax of any good (or bad) hacker movie, there\u2019s a scene where the hackers escape by outrunning actual guards. When thinking about on-prem vs the cloud, this is an important visual. <b>On-premise environments require a layer of physical, on-site security in addition to network security and cyber defenses.<\/b> It\u2019s a significant upfront investment for hardware, installation, and the continued expense of humans to maintain it. On the second half of a server\u2019s life cycle there\u2019s also a cost of upkeep and eventual server replacement.<\/p>\n\n<h2 class=\"wp-block-heading\">Pros and cons of on-premise vs cloud-based infrastructure<\/h2>\n\n<p class=\"wp-block-paragraph\">Whether you\u2019re deciding between on-prem and the cloud at the start of your business, or considering a cloud migration, these are some key differences.<\/p>\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Main\u00ad char\u00adacteristics of on-p\u00adremise<\/th><th>Main\u00ad char\u00adacteristics of clou\u00add-based<\/th><\/tr><\/thead><tbody><tr><td>Larg\u00ade upfr\u00adont cost\u00ad<\/td><td>Pay-\u00adas-you-go subs\u00adcription<\/td><\/tr><tr><td>Hard\u00adware\/software inst\u00adallation and lice\u00adnsing<\/td><td>No inst\u00adallation, fast\u00ad onbo\u00adarding<\/td><\/tr><tr><td>Full\u00ad cont\u00adrol over\u00ad your\u00ad infr\u00adastructure<\/td><td>Thir\u00add-party host\u00ading<\/td><\/tr><tr><td>Resp\u00adonsible for all comp\u00adliance<\/td><td>Clou\u00add-provider resp\u00adonsible for comp\u00adliance<\/td><\/tr><tr><td>Larg\u00ader ongo\u00ading cost\u00ads (mai\u00adntenance, on-s\u00adite staf\u00adf, etc.\u00ad)<\/td><td>Not resp\u00adonsible for serv\u00ader main\u00adtenance<\/td><\/tr><tr><td>Resp\u00adonsible for phys\u00adical and cybe\u00adr secu\u00adrity<\/td><td>Prov\u00adider resp\u00adonsible for meet\u00ading secu\u00adrity stan\u00addards<\/td><\/tr><tr><td>Supp\u00adort your\u00ad own infr\u00adastructure<\/td><td>Prov\u00adiders offe\u00adr dedi\u00adcated IT staf\u00adf, supp\u00adort and addi\u00adtional serv\u00adices<\/td><\/tr><tr><td>Limi\u00adted to the devi\u00adces you use for inst\u00adallation<\/td><td>Acce\u00adss on a larg\u00ade numb\u00ader of devi\u00adces, supp\u00adorts inte\u00adgration with\u00ad othe\u00adr tool\u00ads and secu\u00adrities like\u00ad <a href=\"void(0)\">sin\u00adgle-sign on<\/a> (SSO\u00ad)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<h3 class=\"wp-block-heading\">When to choose the cloud<\/h3>\n\n<p class=\"wp-block-paragraph\">When you need speed and security.<\/p>\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Pros\u00ad of the clou\u00add<\/th><th>Cons\u00ad of the clou\u00add<\/th><\/tr><\/thead><tbody><tr><td>Pay by subs\u00adcription, low upfr\u00adont cost\u00ad<\/td><td>Cust\u00adom pric\u00ading stru\u00adctures can be comp\u00adlex<\/td><\/tr><tr><td>Comp\u00adliance and secu\u00adrity are mana\u00adged<\/td><td>Cust\u00adom term\u00ads may be an adde\u00add cost\u00ad<\/td><\/tr><tr><td>Extr\u00ademe scal\u00adability<\/td><td>May limi\u00adt some\u00ad conf\u00adiguration opti\u00adons<\/td><\/tr><tr><td>Supp\u00adorts thir\u00add part\u00ady inte\u00adgrations<\/td><td>May be a lear\u00adning curv\u00ade to use clou\u00add tool\u00ads<\/td><\/tr><tr><td>Dedi\u00adcated supp\u00adort and addi\u00adtional serv\u00adices<\/td><td>Clou\u00add prov\u00adiders can expe\u00adrience down\u00adtime<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<p class=\"wp-block-paragraph\">Cloud environments are designed for speed, especially when you compare the time between onboarding with a cloud provider to the days\/weeks\/months it can take to install and configure on-premise servers. Because you\u2019re paying for a service, <b>cloud-based providers are obligated to maintain a certain percentage uptime, support responsiveness, security measures, and server maintenance<\/b> \u2013 all outlined neatly in <a href=\"https:\/\/www.mailgun.com\/fr\/legal\/sla\/\" target=\"_tabs\" rel=\"noopener noreferrer\">SLAs<\/a>.<\/p>\n\n<p class=\"wp-block-paragraph\">Cloud software is built to adapt. The success of these services depends on their ability to constantly meet new requirements and roll out new features and updates to keep them competitive with business needs.<\/p>\n\n<h3 class=\"wp-block-heading\">When to choose on-premises<\/h3>\n\n<p class=\"wp-block-paragraph\">When you need total control.<\/p>\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Pros\u00ad of on-p\u00adremises<\/th><th>Cons\u00ad of on-p\u00adremises<\/th><\/tr><\/thead><tbody><tr><td>Comp\u00adlete cont\u00adrol over\u00ad your\u00ad infr\u00adastructure<\/td><td>Larg\u00ade upfr\u00adont inst\u00adallation cost\u00ads<\/td><\/tr><tr><td>Cont\u00adrol over\u00ad your\u00ad secu\u00adrity<\/td><td>Addi\u00adtional on-s\u00adite secu\u00adrity is requ\u00adired<\/td><\/tr><tr><td>SMTP\u00ad send\u00ading thro\u00adugh your\u00ad serv\u00aders cost\u00ads less\u00ad<\/td><td>No deli\u00adverability or veri\u00adfication supp\u00adort unle\u00adss you prov\u00adide it inte\u00adrnally<\/td><\/tr><tr><td>Does\u00ad not rely\u00ad on inte\u00adrnet to acce\u00adss data\u00ad<\/td><td>Must\u00ad use your\u00ad own reso\u00adurces to meet\u00ad comp\u00adliance stan\u00addards<\/td><\/tr><tr><td>No rest\u00adrictions on amou\u00adnt of sent\u00ad mess\u00adages, stor\u00aded data\u00ad, or size\u00ad of data\u00adbases<\/td><td>Less\u00ad cont\u00adrol over\u00ad your\u00ad emai\u00adl repu\u00adtation by owni\u00adng your\u00ad own serv\u00aders<\/td><\/tr><\/tbody><\/table><\/figure>\n\n<p class=\"wp-block-paragraph\">Maintaining an on-premise infrastructure may be pricey, but it\u2019s also 100% yours, and that supports tailor-made security and customizations when it comes to your network resources. <b>Also, on-premises does not rely on an internet connection to access stored data.<\/b><\/p>\n\n<p class=\"wp-block-paragraph\">We\u2019ve made it clear that on-premises has steep upfront costs, but there are some places that this solution can save you money. If you don\u2019t need a high-speed connection to access data, you don\u2019t need to pay for internet that supports high download speeds. You also have 100% control over your configurations and level of security, allowing you to tailor your solutions either for yourself or for target clients.<\/p>\n\n<p class=\"wp-block-paragraph\">If we bring the conversation back around to email, companies with current on-premise infrastructure may find it hard to transition to cloud-based. Provisioning your own SMTP sending through your own servers costs less than a monthly cloud subscription.<\/p>\n\n<p class=\"wp-block-paragraph\"><b>However, when you manage your own physical servers, you have less control over your email reputation.<\/b> Servers alone aren\u2019t a service. PaaS providers like Mailgun offer additional support to protect against vulnerabilities and inefficiencies like traffic segmentation, dedicated IT teams, <a href=\"https:\/\/www.mailgun.com\/fr\/solutions\/services-delivrabilite-lp\/\" target=\"_tabs\" rel=\"noopener noreferrer\">Deliverability Services<\/a>, <a href=\"https:\/\/www.mailgun.com\/fr\/products\/inbox\/email-verification\/email-validator\/\" target=\"_tabs\" rel=\"noopener noreferrer\">Email validation<\/a>, and we scale up our protocols based on developing legislations like <a href=\"https:\/\/www.mailgun.com\/fr\/blog\/email\/le-rgpd-arrive\/\" target=\"_tabs\" rel=\"noopener noreferrer\">GDPR<\/a> and CCPA.<\/p>\n\n<h2 class=\"wp-block-heading\">On-premise vs cloud: Is on-prem more secure?<\/h2>\n\n<p class=\"wp-block-paragraph\">NO. This is a miss-conception.<\/p>\n\n<p class=\"wp-block-paragraph\">When someone says \u201ccloud security\u201d in 2022, \u201ccompliance\u201d is usually just a few sentences behind. Highly regulated industries: government agencies, utilities, etc., are less likely to convert to cloud-based because of their security controls and compliance obligations, and reservations about how cloud data is managed. That\u2019s changing.<\/p>\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.mailgun.com\/fr\/blog\/email\/email-conformite-hipaa\/\" target=\"_tabs\" rel=\"noopener noreferrer\"><b>Regulatory controls such as HIPAA<\/b><\/a><b> are cloud compatible<\/b> and all <a href=\"https:\/\/www.mailgun.com\/blog\/product\/mailgun-email-protection\/\" target=\"_tabs\" rel=\"noopener noreferrer\">cloud providers are held to an increasing number of compliances<\/a> when it comes to sensitive data. SOC, GDPR, CPPA, HIPAA, ISO 27001, PCI DSS\u2026 these are not easy standards to meet. Cloud services are constantly being fortified against cyberattacks and vetted not just by <a href=\"https:\/\/security.mailgun.com\/\" target=\"_tabs\" rel=\"noopener noreferrer\">compliance standards<\/a>, but by current and potential customers. Just ask our sales and security teams how often they complete lengthy vendor security assessments.<\/p>\n\n<p class=\"wp-block-paragraph\"><b>Opting for an on-premise solution doesn\u2019t exempt you from being compliant.<\/b> On-premise infrastructure means you will be managing not only your own security solutions, but are also responsible for meeting state, national, global security, and data management requirements as they evolve. Do you <i>have<\/i> to be GDPR or CPAA complaint? No, but it will limit who you can do business with.<\/p>\n\n<h3 class=\"wp-block-heading\">Data security and data storage<\/h3>\n\n<p class=\"wp-block-paragraph\">Encryption for data when it\u2019s moving and for when it\u2019s standing still.<\/p>\n\n<p class=\"wp-block-paragraph\">Regardless of <i>where<\/i> your data is stored, either on-premises or in the cloud, encryption at rest is the standard protection format. <b>Mailgun utilizes AES-256 encryption-at-rest for all customer data<\/b> which means a 256-bit key is required for encryption\/decryption. Sounds impressive right? Well, if it\u2019s good enough for the <a href=\"https:\/\/www.nsa.gov\/\" target=\"_tabs\" rel=\"noopener noreferrer\">U.S. National Security Agency<\/a> (NSA) and giant cloud providers like AWS, it\u2019s good enough for us.<\/p>\n\n<p class=\"wp-block-paragraph\">Need more data security details? <a href=\"https:\/\/www.mailgun.com\/fr\/legal\/dpa\/\" target=\"_tabs\" rel=\"noopener noreferrer\">Check out the Mailgun DPA<\/a> for all the ins and outs.<\/p>\n\n<h3 class=\"wp-block-heading\">Email and security<\/h3>\n\n<p class=\"wp-block-paragraph\">Cloud-based providers support high volume sending.<\/p>\n\n<p class=\"wp-block-paragraph\">There are two options when you need to send an email. <a href=\"https:\/\/www.mailgun.com\/fr\/blog\/email\/difference-entre-smtp-et-api\/#subchapter-2\" target=\"_tabs\" rel=\"noopener noreferrer\">Send with API or with SMTP<\/a>. SMTP is a standardized protocol for transfer mail. It\u2019s basically a relay system between a series of ports used to transfer your emails to your recipients. Sounds perfect right? Unfortunately, <b>SMTP doesn\u2019t support encryption in its native state, so it\u2019s vulnerable to spammers.<\/b><\/p>\n\n<p class=\"wp-block-paragraph\">How do we solve for this? Enter <a href=\"https:\/\/www.mailgun.com\/blog\/product\/outgoing-message-security-settings-now-available-in-the-control-panel\/\" target=\"_tabs\" rel=\"noopener noreferrer\">Transport Layer Security (TLS) encryption<\/a>. <b>TLS is an added layer of protection that does the encryption that SMTP can\u2019t<\/b>, so your messages are protected as they travel to the inbox.<\/p>\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" class=\"wp-image-4952\" width=\"1600\" height=\"642\" src=\"https:\/\/www.mailgun.com\/wp-content\/uploads\/2025\/07\/TLS-inscription.png\" alt=\"Image shows your email path using a provider like Mailgun, from your app through Mailgun with TLS encryption, to your target inbox.\" srcset=\"https:\/\/www.mailgun.com\/wp-content\/uploads\/2025\/07\/TLS-inscription.png 1600w, https:\/\/www.mailgun.com\/wp-content\/uploads\/2025\/07\/TLS-inscription-300x120.png 300w, https:\/\/www.mailgun.com\/wp-content\/uploads\/2025\/07\/TLS-inscription-768x308.png 768w, https:\/\/www.mailgun.com\/wp-content\/uploads\/2025\/07\/TLS-inscription-1024x411.png 1024w, https:\/\/www.mailgun.com\/wp-content\/uploads\/2025\/07\/TLS-inscription-1536x616.png 1536w\" sizes=\"(max-width: 1600px) 100vw, 1600px\" \/><\/figure>\n\n<p class=\"wp-block-paragraph\">Securing messages in transit is only one part of the equation. There\u2019s another aspect of email security around how your contact\u2019s email addresses are imported. This requires a secure funnel, which Mailgun has created with our API. Our advice? Use API when you can to support your contacts and sending, it\u2019s more secure than SMTP alone.<\/p>\n\n<h3 class=\"wp-block-heading\">Security and scalability<\/h3>\n\n<p class=\"wp-block-paragraph\">One point for the cloud.<\/p>\n\n<p class=\"wp-block-paragraph\">Scalability is where cloud-based delivers some serious hit points to on-premises, particularly when it comes to security upgrades. Companies like Mailgun are one-half product and one-half product support. This means <b>when it comes to defending against cyber security, we have a dedicated team to counter threats and scale defenses<\/b>. When it comes to resolving outages, we have a dedicated team. When it comes to <a href=\"https:\/\/www.mailgun.com\/fr\/contact\/support\/\" target=\"_tabs\" rel=\"noopener noreferrer\">answering customer questions<\/a>, tailoring <a href=\"https:\/\/www.mailgun.com\/fr\/blog\/deliverability\/ameliorer-taux-de-livraison-des-emails\/\" target=\"_tabs\" rel=\"noopener noreferrer\">deliverability strategie<\/a>s, or meeting scaling <a href=\"https:\/\/security.mailgun.com\/\" target=\"_tabs\" rel=\"noopener noreferrer\">internal protocols to meet compliance standards<\/a>, we have dedicated teams.<\/p>\n\n<p class=\"wp-block-paragraph\"><b>Ultimately, on-premises is an independent infrastructure only responsible for itself and cloud-based is a collective infrastructure responsible to everyone that uses it.<\/b><\/p>\n\n<h2 class=\"wp-block-heading\">Cloud-based infrastructure to power your email program<\/h2>\n\n<p class=\"wp-block-paragraph\">Deciding to partner with a cloud-based service might not be an easy decision. Maybe your company is under the spotlight when it comes to data management and security, maybe you\u2019re considering leaving your current on-premise solution and are unsure what migrating to the cloud would mean.<\/p>\n\n<p class=\"wp-block-paragraph\">As an email service provider, this is our bread and butter. If we haven\u2019t converted you to team cloud, if you need more insight, more data, or just a broader view of email infrastructure and security, we\u2019ve got it ready.<\/p>\n\r\n    <aside data-content-type=\"longform\"  class=\"banner-block longform-spacings rounded-lg shadow-lg px-5 py-6 px-md-6 py-md-7 p-lg-7 bg-light\" data-theme=\"dark\" aria-labelledby=\"banner-block-block_deb6848cebc6b5921658ad9b551706ec\">\r\n                    <p class=\"text-uppercase section-caption text-body-color\">\r\n                Learn about email security and compliance            <\/p>\r\n                            <p class=\"h4 text-accent fw-bold\" id=\"banner-block-block_deb6848cebc6b5921658ad9b551706ec\">\r\n                Email security and compliance            <\/p>\r\n                            <div class=\"mb-0 text-body-color\">\r\n                                    <div class=\"content-body mb-0 text-body-color\">Email security isn&#x27;t easy. But you need to protect your business, brand, employees, and subscribers. Find out about the benefits of continually improving email security and compliance from our industry experts. It&#x27;s yours to explore. No form filling required.<\/div>\r\n                            <\/div>\r\n        \r\n        <div class=\"text-start mt-5\"><a href=\"https:\/\/www.mailgun.com\/wp-content\/uploads\/2025\/10\/GU-MG-Security-and-Compliance.pdf\"  class=\"btn btn-secondary\" >Get the guide<\/a><\/div>\r\n    <\/aside>\r\n\r\n","protected":false},"excerpt":{"rendered":"<p>La s\u00e9curit\u00e9 de vos emails, de vos donn\u00e9es et de votre infrastructure est la priorit\u00e9 absolue. Dans cet article, nous mettons en \u00e9vidence les diff\u00e9rences entre les infrastructures sur site et le cloud, afin que vous ne vous retrouviez pas sans solution en cours de route.<\/p>\n","protected":false},"author":21,"featured_media":4843,"menu_order":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"blog_category":[23],"class_list":["post-24660","blog","type-blog","status-publish","has-post-thumbnail","hentry","blog_category-it-and-engineering"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>S\u00e9curit\u00e9 des emails\u00a0: vaut-il mieux utiliser le cloud ou le sur site\u00a0? - Transactional Email API Service For Developers | Mailgun<\/title>\n<meta name=\"description\" content=\"La s\u00e9curit\u00e9 des emails est une priorit\u00e9, mais quelle est la meilleure infrastructure\u00a0? Devez-vous investir dans le sur site ou adopter le cloud\u00a0? 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