[Azure] Fundamentals: Cloud service types

Infrastructure as a Service (IaaS)

the most flexible category of cloud services because it provides the maximum amount of control over your cloud resources.

IaaS takes the most share of responsibility.

Build pay-as-you-go IT infrastructure by renting servers, virtual machines, storage, networks, and operating systems from a cloud provider.

Some common scenarios for IaaS are:

• Lift-and-shift migration: Just build your cloud resources similar to your on-premises data center and then move what runs on-premises to your IaaS infrastructure.
• Test and Development: I have set up configurations for development and test environments that need to be quickly cloned. You can quickly launch or shut down different environments using the IaaS structure while maintaining complete control.

Platform as a Service (PaaS)

Platform as a Service (PaaS) is the middle ground between renting space in a data center (IaaS) and paying for a complete, deployed solution (SaaS).

Provides environment for building, testing, and deploying software applications; without focusing on managing underlying infrastructure.

In a PaaS scenario, you don't have to worry about licensing or patching your operating system and database.

Some common scenarios for which PaaS is suitable include:

• Development framework: PaaS provides a framework that developers can build upon to develop or customize cloud-based applications. Similar to how Excel macros are created, developers can create applications using built-in software components through PaaS. Cloud features such as scalability, high availability, and multi-tenant capabilities are included, reducing the amount of coding developers need to do.
• Analytics or Business Intelligence: Tools delivered as a service with PaaS allow organizations to analyze and mine data, find insights and patterns, and predict outcomes to improve forecasting, product design decisions, return on investment, and other business decisions. can.

Software as a service (SaaS)

Software as a Service (SaaS) is the most complete cloud service model from a product point of view.
With SaaS, you essentially rent or use a fully developed application.
Mail, financial software, messaging applications, and connectivity software are all common examples of SaaS implementations.

Users connect to and use cloud-based apps over the internet: for example, Microsoft Office 365, email, and calendars

Almost everything is covered by cloud providers.

Some common scenarios for SaaS include:

• Mail and Messaging.
• Business productivity applications.
• Financial and expense tracking.