To choose the cloud computing service that's right for you, you need to know the different cloud computing models or types of cloud services. Today, cloud computing possibilities are much more varied than they were a few years ago. What began as a range of business applications such as CRM, e-mail or high-powered virtual environments has grown to offer much more complex combinations and services.

Today, many companies outsource their information systems to cloud service providers, but sometimes a poor choice of cloud service can ruin our existence. First of all, let's discover the different cloud computing models we can find.

cloud computing models

The increase in cloud computing options has also led to a diversification of the services available, so we can distinguish between SaaS (Software as a Service), PaaS (Platform as a Service) and IaaS (Infrastructure as a Service).

There are also CaaS (Communications as a Service or Communications as a Service), DaaS (Database as a Service) and XaaS or EaaS (Everything as a Service or Everything as a Service), but we will only talk about the best known to help you choose a cloud service based on the needs of your business.


SaaS is the most popular and also the most widespread. This type includes all software aimed at end users, those who do not need to manage everything behind it, such as maintenance, hardware, operating system, backup, storage, etc.

Software as a Service allows users to use the hosted software remotely (along with their database) from anywhere, as it is hosted in the cloud. This is usually "software on demand" and customers pay on a per-user basis, although they can also pay through a monthly or annual subscription fee.

1) Cost reduction
2) Reduction of time since the software is already installed
3) Scalability
4) Ease of use

1) Integration with other applications in the organization
2) Uncertainty regarding the owner of the applications
3) Vendor dependency

SaaS services include office suites such as Office 365 or Google Apps for Work and other products such as CRM Microsoft Dynamics or Salesforce, ERP in the cloud as SAP Business ByDesign or Oracle E-Business Suite and storage services such as Google Drive or Dropbox, among others.


The platform as a service usually requires much more advanced computer knowledge than SaaS and, therefore, these platforms as a service are aimed more at application developers who need to have environments in which to deploy software without having to worry about the maintenance of the hardware itself, the manual allocation of resources, the installation of software and maintenance, and so on.

They also tend to have options for monitoring activity within the applications themselves. Both AWS and Azure offer this type of service, although in this area there are other services from specialized providers such as Google App Engine, Heroku or Redhat Openshift. PaaS solutions based on free software include Docker and Kubernetes.

Ease of platform administration, simplicity for self-development, and easy integration with the rest of the platform

Dependence on the supplier if open source solutions such as Docker and Kubernetes are not used and doubts about data confidentiality


Infrastructure as a service is one of the types of cloud computing that allows greater control over the service itself in the cloud. The user carries out all the management, both of the operating system and the power of the machines, the allocated disk space or the scalability of the applications, except for maintenance. This gives more freedom to design a solid business environment in the cloud, with savings in maintenance, space, and equipment compared to an on-premise option. In this case, suppliers such as Azure, AWS, Google Cloud Platform, among others, are also included.

Flexibility concerning the infrastructure required by the client, quick installation, and easy to deploy customer applications

Support is necessary, since being outsourced is more complicated to solve problems. It is, therefore, the ideal choice for customizing your application's underlying hardware or software, or even for setting more specific security parameters that require a private cloud or isolated databases. IaaS can be found in private or public clouds, and even with support modules that blur the lines between IaaS and PaaS.

The Cloud Computing You Need For Your Business

Saas, Flexibility, and Elasticity for Your Business
The adoption of a cloud computing service such as SaaS enables enterprises to benefit from the use of applications without having to maintain and update infrastructure and components. The flexibility and elasticity provided by the SaaS model bring great benefits, so mail, ERP, collaboration and office applications are the most accepted SaaS solutions.

Enterprises that choose this type of cloud service must consider the costs and benefits when deciding on the best model by examining the implementation through a thorough assessment of workloads.

Paas, Cloud Computing For Development Companies
Development companies and/or factories that want to implement Agile methodologies are the most suitable for the adoption of PaaS. PaaS providers publish many available and updated services that can be consumed within applications. This model makes it easier to test, prototype new applications, save on the development of new services, and launch faster to get user feedback.

Choosing an IaaS or PaaS will depend on internal resources and institutional knowledge as well as the regulatory environment. Companies that need to invest time in their development but do not have many operational resources should consider PaaS, while those that need greater security and/or customization should explore IaaS options.

Iaas, Infrastructure Availability and Reliability
Everything begins with the operating system layer, that is the management responsibility of the company and the supplier must guarantee the availability and reliability of the infrastructure provided.

The implementation of IaaS is recommended in those companies that do not have their own data center and therefore need a fast and economic infrastructure to materialize their business initiatives with the possibility of being scalable according to their needs.

On the other hand, the companies apt to adopt an IaaS are the traditional organizations whose workloads are variable and require less capital expenditure. Regardless of the case, companies will only pay for the services used.

SaaS, PaaS, IaaS offer online cloud computing services with numerous advantages that work through the cloud where payment is made on a per-user basis.
The provider must be in charge of maintenance and technical assistance and, therefore, these services must be taken into account if your objective is to reduce costs, improve communication and increase productivity.

One of the main problems with cloud projects is that there is no universal framework of standards with which to help select the right provider. Cloud computing is often not limited to a single definition, making it doubly important to establish in good time the list of IT and business requirements. Next, it is necessary to confirm that these requirements must be rigorously applied and impose harsh sanctions that must be included in the contract if the SLAs are not met.

However, there is also help at your fingertips. There are several independent cloud organizations, such as the Cloud Industry Forum, that provide a wealth of useful information and advice. Another good idea is to visit as many industry events as possible and network with your colleagues - find out what their needs are, which providers they are using, and get those references. At the very least, there are 4 to 5 conferences a month on cloud and cloud security, so our advice is to attend and gather as much information as possible before making a decision. Show All Articles