A Brief History of Email
Today, we all use emails on a day-to-day basis and consider them to be one of the most useful and popular services on the internet. However, it is interesting to know that email in fact precedes the internet.
The first email is considered to be a program called “MAILBOX” used on computers at MIT all the way back in 1965, where users could leave messages for other users who would log onto the same computer.
The famous ARPANET (Advanced Research Projects Agency Network) was developed in 1969 by the US Department of Defense. It consisted of a network connecting a large number of computers across the department. On October 29th, 1969, at 10:30 pm PST, the first message was sent between two computers on the ARPANET. This is what the message looked like:
In 1971, Ray Tomlinson invented a network email system on the ARPANET, which is the first electronic mail as we know it today. By 1976, 75% of all ARPANET traffic consisted of emails, and ideas began to form about extending this functionality to the outside of the ARPANET. These ideas became the building blocks for the creation of the INTERNET.
Email Servers Today
Historically, email messages were stored on every organization’s own servers, typically hosted in a traditional data center on-premises. However, today companies are no longer limited to their own servers to have their email service. Cloud servers are a new way of providing the same services without having the internal hardware and staff to maintain an email server, and are typically accessed via the public internet, unlike traditional data centers that use internal networks. Nonetheless, both solutions offer their advantages and disadvantages and remain popular among different groups of corporations, with data centers continuing to play a crucial role in both on-premises and cloud deployment models.
Public Cloud Services vs On-premises
So emails have been around for decades and have been a reliable, affordable, and efficient means of communication and even marketing. However, the choice between having cloud-based or on-premises servers remains challenging. Traditionally, organizations have relied on traditional on-premises solutions, managing hardware and infrastructure on-site before the adoption of cloud technologies. It is important to consider the specific needs of your company when evaluating each solution.
Cloud-based servers often utilize public cloud computing resources, which provide scalable, shared services from third-party vendors over the internet. These resources offer flexible pricing models and technological advantages, making them a cost-efficient and scalable alternative to traditional on-premises infrastructure. Here we mean to do a brief comparison of the two technologies in order to give you a better insight into the two solutions.
Cloud Deployment
When considering cloud storage, it is important to look at the way it stores data. Cloud storage uses external servers managed by another company, and a virtual private cloud offers the security and isolation of a private cloud while being hosted on a public cloud infrastructure. In these models, the underlying infrastructure is managed by the cloud provider, enabling scalability and operational efficiency. This can lead to some advantages and drawbacks.
Cloud environments also provide access to a wide range of other resources beyond storage, such as compute and networking services.
Pros
- Less time and work needed for data management: Since the storage is managed by an external company, there is a smaller workload on your staff.
- Less upfront cost: Typically, you need a larger initial investment for setting up on-premises storage. Cloud storage is instead less costly upfront and will usually be based on a monthly subscription payment.
- Automatic regular backups: In a cloud-based storage system, you don’t have to worry about backing up your data or losing local copies of files, as the managing company will usually take care of regular backups.
Cons
- A fast internet connection is a necessity: Since you will be connected to your data via the public internet, having a slow or unreliable connection can impact performance and reliability, resulting in a bad user experience in working with your data.
- Higher total costs: While an on-premises solution will have a higher upfront cost, in most cases, the total cost of using cloud-based storage is higher. As cloud services are based on consumption, the more storage your company requires, the higher the cost, and this can accumulate faster than one would anticipate.
- An internet outage means no access to your data: Relying on an internet connection for data storage would mean that access to your important files can become impossible at the time of necessity, in case there is an outage or problem in your internet connection. Service level agreements (SLAs) define the expected uptime and reliability of cloud services, but outages can still occur.
- Legal litigation: In case of a legal dispute, law enforcement authorities could issue a search warrant to your cloud supplier and access your most sensitive data without your consent.
- Security flaws: Data vulnerability is probably the most important consideration when using cloud-based storage. When trusting your data with another company, you might be giving access to unauthorized personnel. It is important to know about the company’s security practices and how your data is encrypted. Using a cloud-based storage system would also make your data more vulnerable to hackers, as each connection between you and the cloud supplier, plus the connections between different servers of the cloud supplier, especially if they are located at distant places (thus connected via the internet), would create a potential vulnerability for a data breach. Public cloud environments often serve multiple customers, increasing the risk of data breaches due to shared infrastructure.
To read more about this and find out the roots of such issues, you can read Roots of Cloud Computing and Data Privacy Concerns
On-premises and Private Clouds Deployment
While using on-premises storage, your data relies on your own company’s infrastructure, typically housed in a dedicated data center managed by your organization. You will be using your own equipment and will be in charge of the lifecycle management. Some organizations implement an on-premises private cloud to combine full control with cloud-like scalability and flexibility. Managing such environments often involves complex server provisioning and ongoing management by IT staff. This approach has many advantages and disadvantages based on your needs. Below, we will discuss some of the most important pros and cons of this solution.
Pros
- No need for an internet connection to guarantee data access: A major advantage of the on-premises approach is that a connection loss would not mean a lack of access to your data, as the data is accessible via your company’s internal network.
- Ability to choose server hardware based on your specific needs: Being able to customize your server’s hardware based on your company’s specific needs offers you greater flexibility and the potential for quicker access.
- Better security: As mentioned above, cloud storage might leave your data vulnerable, both to unauthorized access from unauthorized personnel of the cloud supplier company and to external threats based on an insecure connection. On-premises storage, instead, is completely restricted from anyone but authorized personnel in your company. This can be a very important consideration, especially for companies that handle sensitive data.
Cons
- The extra workload for your IT staff: Using an on-premises solution would require having the right staff for managing and maintaining your servers, which in turn could result in an added cost.
- Need for a greater upfront investment: As discussed above, implementing on-premises storage would mean a greater upfront investment, as you will need to purchase the needed hardware. This could be an important disadvantage for startups and smaller companies.
- Risk of data loss: With an on-premises solution, you are responsible for any data backup and security. If not implemented properly, a system malfunction, hardware failure, or ransomware attack can cause you to lose important data. A best practice for on-premise storage is to include off-site backups for your data.
- Scaling the servers could be costly: scaling up your company using on-premises storage would be more difficult, as you will need new hardware and staff to maintain it. In cloud-based storage, instead, you can scale up in a few clicks and buy yourself more storage.
Hybrid Cloud Strategies
Hybrid cloud strategies are transforming the way your organization approaches IT infrastructure by blending private clouds, public cloud services, and on-premises resources into a unified, flexible cloud computing environment dedicated to your unique requirements. This approach allows your business to harness the strengths of both private and public cloud environments, achieving enhanced security, greater control, and the scalability needed to support your evolving business needs.
By integrating your private cloud infrastructure with leading public cloud services—such as Google Cloud, Microsoft Azure, or Amazon Web Services—your organization can create a hybrid cloud that adapts to your operational demands. In this model, computing resources are provisioned and managed across multiple cloud environments, enabling seamless scaling and optimized resource utilization that can reduce costs by up to 40%. This flexibility is especially valuable for your enterprise if you need to maintain full control over sensitive data and software applications, while still benefiting from the agility and innovation offered by public cloud service providers.
A key advantage of hybrid cloud strategies is your ability to meet stringent regulatory compliance requirements and data sovereignty mandates. Your sensitive data and mission-critical workloads can remain within private cloud environments or on-premises infrastructure, ensuring compliance with security requirements and industry regulations. At the same time, your less sensitive workloads can leverage the processing power and storage resources of public cloud computing, allowing your organization to innovate faster and respond to changing market conditions while achieving significant return on investment.
Security is at the forefront of hybrid cloud strategies for your business. By maintaining control over the underlying physical hardware and private cloud architecture, your organization can implement robust access controls, manage encryption keys, and enforce strict data privacy policies. This approach minimizes your exposure to shared responsibility models and the risks associated with shared resources in public cloud infrastructure, while still enabling collaboration and scalability across your business units with up to 60% better security posture.
Ultimately, hybrid cloud strategies empower your organization to create a cloud computing environment that is tailored to your specific business needs. By combining the dedicated infrastructure of private clouds with the flexibility of public cloud services, your business can optimize IT operations, maintain complete control over your data, and ensure that your cloud environments are secure, compliant, and ready to support your future growth with measurable economic benefits that often exceed implementation costs.
The Solution: Sovereign Cloud
Given the ongoing debate between cloud-based and on-premises email solutions, organizations often find themselves forced to compromise between security, cost, and control. However, there is a way to enjoy the best of both worlds: Sovereign Cloud. Designed to uphold digital sovereignty, Sovereign Cloud ensures organizations maintain full data control and compliance with local regulations. This approach is especially valuable for highly regulated industries that require strict data residency and security measures. Unlike traditional cloud models, sovereign cloud solutions may be hosted in a cloud service provider’s data center located within the same jurisdiction, ensuring data remains under local legal protections. The cloud service provider plays a crucial role in managing and securing the sovereign cloud infrastructure, supporting organizations in meeting regulatory and operational requirements.
What is Sovereign Cloud?
Sovereign Cloud is a cloud infrastructure dedicated exclusively to a single organization, operating as a single tenant environment that ensures isolation and security. It resides within the confines of the same country where the organization operates, supporting data residency and compliance requirements. Sovereign cloud leverages private cloud computing principles to provide dedicated resources and greater control over data and infrastructure. Some sovereign cloud solutions are delivered as a managed private cloud, where a third-party provider manages the environment while maintaining strict security and compliance standards. Unlike traditional public cloud solutions, where infrastructure is shared among multiple clients, Sovereign Cloud ensures that your data and applications—including sensitive information such as intellectual property and financial data—are stored in an isolated environment, fully controlled by you. This eliminates concerns related to data privacy, compliance, and third-party access.
How Does It Work?
Sovereign Cloud is made possible by deploying enterprise-grade software within a cloud environment that is fully dedicated to a single organization, often leveraging private cloud solutions and private cloud services as foundational elements. Instead of relying on a public cloud provider to manage your email and collaboration infrastructure, a trusted partner or internal team sets up and maintains the cloud environment using on-premises-grade software solutions. Service delivery can be managed internally or by a third-party provider, ensuring compliance, security, and optimal performance. This effectively turns the cloud into a private, exclusive infrastructure as a service (IaaS), giving organizations complete governance over their data without sacrificing scalability and automation. Sovereign cloud environments operate under a shared responsibility model, where both the provider and the customer jointly manage security and compliance to meet digital sovereignty requirements. Robust access control mechanisms are essential in these environments, allowing organizations to restrict and manage who or what can access sensitive data, further enhancing security and regulatory compliance.
Key Benefits of Sovereign Cloud
- Full Data Sovereignty: Your cloud infrastructure is exclusively yours, eliminating the risks of data being accessed by unauthorized third parties or stored in jurisdictions with conflicting legal frameworks.
- Regulatory Compliance: Sovereign cloud helps organizations meet regulatory compliance requirements across jurisdictions. Since your data never leaves your dedicated infrastructure, you remain fully compliant with data protection laws, such as GDPR and other industry-specific regulations. Local data processing and controls also support maintaining compliance, especially for industries like finance and healthcare.
- High Security with Cloud Advantages: Unlike public cloud environments, Sovereign Cloud eliminates the security vulnerabilities associated with multi-tenant architectures while still offering automatic updates, scalability, and remote access. Sovereign cloud can utilize the same hardware and software as public cloud, ensuring consistency in performance, support, and deployment simplicity.
- Cost Efficiency Over Time: While initially requiring investment, Sovereign Cloud reduces long-term operational expenses compared to ongoing public cloud subscription fees that scale unpredictably.
- Disaster Recovery and Business Continuity: With a Sovereign Cloud, backup and disaster recovery are still managed efficiently, ensuring business continuity without reliance on third-party infrastructure.
- Comparison to Corporate Cloud: While corporate cloud (private cloud) provides a secure, dedicated environment for sensitive data and compliance, sovereign cloud adds enhanced sovereignty and compliance features, offering greater control over data location, access, and regulatory adherence.
The Future of Email Hosting
Organizations no longer need to choose between cloud convenience and on-premises security. Sovereign Cloud offers a unique, future-proof solution for email and collaboration services, ensuring that businesses retain full control over their data while leveraging the agility and cost-effectiveness of cloud-based systems. By adopting a Sovereign Cloud approach, companies can maintain a private, secure, and compliant digital workspace without compromising on efficiency.
To dive deeper into the architecture and deployment of a scalable and secure solution like this, read more in our detailed analysis: Choosing the Right Deployment for Your Email Server: Public Cloud, On-Premises, or Sovereign Cloud?