Modelos de Nuvem

We’ve explored how cloud technologies offer a broad array of services, allowing businesses and individual users to benefit from flexibility, scalability, and accessibility.

Before diving into cloud services, it’s important to understand the three main models: Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). Each model provides distinct advantages and is designed to meet different needs.

Now, let’s take a closer look at each model:

Como aprendemos no capítulo anterior, as tecnologias de nuvem oferecem uma ampla gama de serviços, proporcionando flexibilidade, escalabilidade e acessibilidade para empresas e usuários individuais.

Temos três principais modelos de serviços em nuvem que precisamos conhecer antes de começar a trabalhar com eles — Infraestrutura como Serviço (IaaS), Plataforma como Serviço (PaaS) e Software como Serviço (SaaS). Cada um desses modelos tem suas vantagens únicas e pode ser usado para resolver diferentes tarefas.

Vamos dar uma olhada mais de perto em cada um deles:

Example

Imagine you have a web application with an idea that has gone viral on the internet, but all you have is a single small laptop. Deploying your own infrastructure to handle the growing user traffic requires a significant investment in hardware, software, and maintenance, not to mention the risks associated with data loss due to power outages or other unforeseen circumstances.

Using IaaS allows you to rent the necessary infrastructure from a cloud service provider. You’re given a virtual machine that can be scaled as your application grows. You only pay for the resources you use, greatly reducing initial costs and eliminating the need to maintain physical hardware.

Platform as a Service (PaaS)

PaaS offers a cloud-based environment for developing and deploying applications, including development tools, libraries, servers, and networking. This model allows developers to focus on software development without the need to manage infrastructure.

Example

To better understand PaaS, let's imagine a startup developing an innovative cloud application for task and project management automation. The team consists of experienced developers, but they want to focus on coding and application functionality rather than setting up servers, databases, and development environments. In this case, the ideal solution would be to use Platform as a Service to achieve the most efficient outcome with minimal resource expenditure.

Software as a Service (SaaS)

SaaS is a software delivery model where applications are made available over the internet, typically on a subscription basis. Users can access the programs without the need for installation or maintenance.

Examples of use:

• Email, calendars, and office applications;
• Customer Relationship Management (CRM);
• Financial and accounting software.

Conclusions

So, we've discussed each of the three models in detail. To effectively utilize cloud technologies, you need to understand the purpose of each of these three models. Therefore, with the given requirements, you'll be able to adapt quickly and understand which specific cloud service or model you need to use, making you a valuable asset to your company!