What are cloud services?

Cloud services are a secure, low-cost and practical way of accessing in­fra­struc­ture or software via a third party. Busi­nesses, in par­tic­u­lar, often benefit from using cloud in­fra­struc­ture and services. Such services include IaaS, PaaS, SaaS, FaaS and XaaS.

Why are cloud services useful?

So-called ‘as a service‘ solutions are par­tic­u­larly popular in the field of cloud computing. While there are many dif­fer­ences between IaaS, PaaS, SaaS and related models, the core concept is similar: the goal is always to provide users with in­fra­struc­ture, tech­no­lo­gies, platforms, or software. The most common models among the various cloud services are the following:

IaaS

IaaS (in­fra­struc­ture as a service). Users can access an IT in­fra­struc­ture that is made available via the internet. This in­fra­struc­ture can be storage, servers or network resources that are made available using virtual machines.

IaaS is a very wide­spread cloud service model and can be used by both busi­nesses and in­di­vidu­als. By using IaaS you can avoid buying, storing and main­tain­ing your own hardware. Anyone au­thor­ised to do so can access the data, which is protected by multiple security systems.

PaaS

PaaS (platform as a service). This type of cloud service is primarily used to develop web-based ap­plic­a­tions. Dev and pro­gram­ming teams as well as in­di­vidu­als who want to make their own apps use this type of service to program, test and manage ap­plic­a­tions. The service offers access to the hardware and software required for building ap­plic­a­tions and in doing so helps app creators save on costs and resources.

SaaS

SaaS (software as a service). SaaS users have access to programs and software col­lec­tions. By accessing them via cloud services, users don’t have to buy and install them sep­ar­ately. These types of service are often used in customer re­la­tion­ship man­age­ment (CRM), human resources man­age­ment (HRM) and data man­age­ment.

FaaS

FaaS (function as a service). This type of cloud service is used for de­vel­op­ment. FaaS providers make function packages available, which can then be purchased. Popular functions and functions that require a lot of computing power can be stored ex­tern­ally and used without lim­it­a­tions.

XaaS

XaaS (anything as a service). This umbrella term includes cloud services that follow a similar principle to the models mentioned above but don’t fit neatly into any of those cat­egor­ies—for example, offerings like Desktop as a Service (DaaS), Storage as a Service (STaaS), and many others. Various recovery, com­mu­nic­a­tion, or mon­it­or­ing solutions.

What are the ad­vant­ages of cloud services?

A powerful and well-suited cloud service solution offers users a wide range of benefits. These include the following in par­tic­u­lar:

✓ Resources: Cloud services do not consume on-site resources. Since no ad­di­tion­al hardware is required, there are virtually unlimited pos­sib­il­it­ies for expanding storage space.

✓ Cost: This leads to sig­ni­fic­ant cost savings. Users only pay for the services they actually need and use. No ad­di­tion­al in­vest­ments are necessary.

✓ Flex­ib­il­ity: Cloud services can be tailored precisely to your needs. Cloud elasti­city allows you to scale up capacity during peak times to handle increased loads. Modern cloud-native ap­plic­a­tions make es­pe­cially efficient use of this flex­ib­il­ity.

✓ Security: Cloud services offer the highest level of cloud security. On the one hand, elim­in­at­ing hardware reduces the risk of damage or loss. On the other hand, all servers come equipped with advanced security features to prevent un­au­thor­ised access, malware attacks, or data loss. Robust pro­tec­tion mech­an­isms, regular backups, and con­tinu­ous mon­it­or­ing ensure that your cloud services—and your data—are well protected.

✓ Ac­cess­ib­il­ity and col­lab­or­a­tion: Cloud services allow location-in­de­pend­ent access to data and ap­plic­a­tions. This fa­cil­it­ates remote work, home offices, and in­ter­na­tion­al col­lab­or­a­tion. Multiple users can access shared files at the same time, which enhances pro­ductiv­ity.

✓ Scalab­il­ity: Cloud services can be scaled ho­ri­zont­ally (more servers) or ver­tic­ally (stronger machines)—auto­mat­ic­ally or manually. This allows companies to respond to changing demands in real time without delays or in­ter­rup­tions.

What types of clouds are available?

There are different types of clouds available. These can be organised into different delivery models:

Public cloud

Public cloud services offer access to different computing resources using the public internet. To access the public cloud, users only need an internet-capable device.

Private cloud

While the public cloud is available to everyone, a private cloud is only available to a limited number of people. This type of cloud is, for example, used within a company and made available via the internet or a private network.

Hybrid cloud

A hybrid cloud is a mix of the public cloud and a private cloud or internal data centre. This means data can be stored in different places depending on where it’s needed and how sensitive it is. A hybrid cloud combines different storage solutions, allowing it to be used seam­lessly.

Mul­ticloud

A mul­ticloud is a com­bin­a­tion of different cloud services that can be connected with each other or function in­de­pend­ently of each other. In a mul­ticloud ar­chi­tec­ture, at least two clouds are used. This can include multiple clouds of the same type or a com­bin­a­tion of different types (e.g., public and private) of clouds.