SaaS - What is Software-as-a-service?

Digitization is not a trend, but a reality. It poses the same central question to companies and public institutions alike: How can we keep our IT efficient, secure and flexible - now and in the future? The answer is increasingly: SaaS - Software as a Service.

Instead of laboriously installing software on individual computers, with SaaS solutions users simply access the desired applications via the internet. The software runs in the cloud: without the need for in-house IT management or hardware. This saves resources, ensures greater agility and makes organizations of all sizes fit for everyday digital life.

SaaS also enables simple collaboration across departments and locations. Thanks to central data storage, information is always up-to-date and immediately accessible to authorized users - regardless of the device.

SaaS is a building block in the larger concept of cloud computing, which also includes Platform as a Service (PaaS) and Infrastructure as a Service (IaaS). While Infrastructure as a Service (IaaS) primarily provides the technical basis - i.e. storage and networks - and PaaS serves as a development environment for programmers, SaaS is aimed directly at end users: they access mobile applications without any installation or complex set-up. This not only reduces the amount of training required, but also the time needed to introduce new software solutions - a clear advantage in a dynamic working environment.

The entire software runs on the SaaS provider's servers, which take care of everything: from updates and maintenance to security, backups and support. All users need is a web browser or an app - and they can get started straight away. Cloud computing allows resources to be provided flexibly and in line with demand. Providers such as STACKIT not only provide the technical infrastructure, but also support with expertise and GDPR-compliant solutions from Germany. This strengthens trust among customers and partners and promotes long-term, secure digitalization strategies.

• Cloud: The technical infrastructure on which SaaS solutions run - flexible, scalable and centrally managed.
• Cloud computing: Provision and use of IT resources such as storage and computing power via the cloud, without own hardware.
• Data protection: Protection of sensitive data against misuse and unauthorized access in compliance with legal requirements such as the GDPR.
• IaaS (Infrastructure as a Service): Cloud model for the flexible use of IT infrastructure such as storage and networks.
• PaaS (Platform as a Service): Cloud model that provides developer platforms for building and operating your own software.
• Infrastructure: The technical basis on which SaaS services are operated.
• Integration: Connection of SaaS solutions to existing systems and processes.
• Management: Central control and administration of applications, users and data.
• Services & support: Technical support from the provider: from initial setup to maintenance and support.

1. stay flexible, scale easily

SaaS grows with you - whether you're a start-up, local authority or large government agency. New users? No problem. Additional functions? Quickly integrated. And all without the hassle of hardware purchases or complicated installations. For organizations with changing needs, such as health services or cities with project peaks, this flexibility is worth its weight in gold.

2. clearly calculable - no nasty surprises

Large one-off investments? No such thing. Instead, companies and public authorities simply pay a monthly or annual fee - and get everything from a single source. This makes costs predictable and creates full transparency for the budget.

3. updates run automatically

Missed a security patch? Not with SaaS. We take care of everything technical in the background - from the latest feature to closed security gaps. This allows your IT teams to concentrate on strategically important issues instead of having to manage a single application or the server itself.

4. data protection included - at the highest level

Security and protection against unauthorized access is essential, especially for sensitive data, e.g. in healthcare or administration. Modern SaaS providers rely on certified data centers, encryption and clearly regulated access rights. Compliance with the GDPR is a matter of course at STACKIT.

5. work regardless of location

Whether in the office, working from home or on the go with a tablet - SaaS software is always at hand. Everything runs over the internet, without complicated VPNs or local servers. Mobile use ensures that teams can work flexibly and from any location - with access to all relevant data and tools. This also makes it easier to integrate external service providers or project-related teams, who can work immediately without additional IT infrastructure - a plus point for modern working methods.

• Data protection and compliance: Public bodies must meet the highest security requirements. STACKIT, with server locations in Germany and Austria, certified data centers and GDPR-compliant processes, offers clear advantages here.
• Cost transparency: Every expense counts, especially when budgets are tight. SaaS models with clearly defined services and ongoing fees make planning easier and avoid unforeseeable additional costs.
• Flexibility and expandability: Requirements for digital applications are constantly changing - whether due to new legal requirements, organizational changes or technical developments. SaaS solutions can be modularly expanded and specifically adapted without the need for in-depth system interventions or complex development processes.
• System integration: Existing IT structures and specialist processes must remain usable. Modern SaaS platforms offer interfaces for smooth integration.
• Accompaniment and support: Expert support from experienced providers is required, especially for awarding and tendering procedures - from planning to implementation.

• Digital citizen services (e.g. online applications, appointment scheduling)
• Document management and audit-proof archiving
• Communication and collaboration tools (e.g. video conferencing, internal platforms)
• Specialist applications for finance, human resources, regulatory affairs or social administration

1. Data sovereigntyHealth data must generally be stored within Germany or the EU - ideally in certified, locally operated data centers.
2. Certified infrastructure: Providers should have security certifications such as ISO/IEC 27001 or comparable standards.
3. Integration: A seamless connection to existing systems in practices, clinics or laboratories is essential - e.g. to HIS, PVS or laboratory systems.
4. Scalability: SaaS platforms must grow reliably with the growing number of users, applications and data volumes.
5. Compliant data processing: Compliance with the GDPR, the IT Security Act and sector-specific regulations (e.g. Section 203 of the German Criminal Code or the Digital Health Applications Ordinance) is mandatory.

• Patient management systems
• Telemedicine platforms
• Scheduling and resource planning
• Analysis and reporting software for medical or administrative evaluations

SaaS has long been more than just a technical delivery model - it is a driver of innovation, efficiency and digital sovereignty. The benefits are compelling: flexible use, predictable costs, high security standards and easy integration with existing systems. In the public sector and healthcare in particular, SaaS opens up the possibility of providing modern digital services - while reliably meeting the strictest data protection and compliance requirements.

Those who rely on SaaS are investing in a future-proof solution that grows with their requirements, conserves resources and creates scope for strategic development. It all depends on having the right partner: STACKIT not only offers a GDPR-compliant infrastructure with server locations in Germany and Austria, but also reliable support, technical expertise and a deep understanding of industry-specific requirements.

After all, digitalization is not a one-off project, but a continuous process. With a strong SaaS partner at your side, it becomes a real driver of progress - for your organization, your employees and your customers.

How can I successfully migrate to a SaaS application without losing data?

Structured data migration is crucial. Good providers - such as STACKIT - actively support you with suitable software, personal advice and good service in order to transfer existing data securely and completely.

What specifically needs to be considered when it comes to data protection?

Clear access regulations and role-based authorization concepts are important so that only authorized persons can access sensitive information. STACKIT offers GDPR-compliant solutions with server locations in Germany and Austria - so sensitive data remains protected at all times.

How do you convince management teams of the new solution?

Success stands and falls with user acceptance - and this begins even before the introduction. Training, transparent communication and the early involvement of employees are crucial. If teams are involved right from the start, not only will acceptance increase, but also long-term use and efficiency in day-to-day operations.

How does the SaaS solution stay up-to-date in the long term?

SaaS applications are constantly evolving. Automatic updates regularly bring new functions and security improvements - without any effort on the part of your IT department.