IaaS, PaaS, SaaS: what it is, what is the difference, application

Regardless of whether the company is large or small, any enterprise needs a server to store databases, unite offices into a single network, etc. Very large businesses can afford to buy expensive server room equipment and place it on their premises. In addition to the equipment will be the cost of maintaining employees to maintain the servers. Their work must be configured and monitored, so many small companies try to rent a place in the cloud. There are three types of cloud services in which clients place IT infrastructure for their business. Let's take a look at their features.

IaaS cloud service

IT product IaaS implies infrastructure as a service. Rent of processor, RAM, space on the hard disk is provided. These components form a virtual server. Software suitable for the company is installed on it.

IaaS service is leased by a cloud provider. It procures all the resources. They are placed in the data center in a special room. The service includes the lease of computing power, data storage and network settings. All maintenance of the IaaS infrastructure is carried out by the client. The provider company only provides access to the system and ensures security.

Advantages of IaaS:

• The ability to conduct flexible customizations is available. The customer can reduce or increase the resources in the cloud.
• Costs are reduced because there is no need to buy expensive hardware and hire employees to maintain it.
• Costs are optimized. You only need to pay for rent in the cloud.
• Once the infrastructure is purchased, you can start working immediately.
• The system can be accessed from anywhere in the world.

PaaS cloud service

This type of cloud service involves leasing a platform. This is ready-made software with customizations. The provider provides the hardware, configuration and customizes the work of the system. The client only uploads his data there. PaaS service does not give the client access to the settings and configurations of the platform. This is handled exclusively by the provider.

Advantages of PaaS:

• The client does not need to spend time to customize the system. The platform is optimally balanced and fully ready to use.
• The IT infrastructure is set up quickly.
• The time for testing is significantly reduced.
• The system is accessible to many users who may be located in different parts of the world.

SaaS cloud service

Such a service implies software that can be used immediately. For example, this website builders, accounting programs in the cloud, schedulers or email services. The provider undertakes full maintenance of the software, including settings, licensing, upgrades, provides technical support.

SaaS infrastructure is ideal for a business that needs to solve a certain task, and the software from the provider fully corresponds to it. However, it is important to take into account that here it is impossible to perform individual customizations. If this is necessary, it is better to choose between IaaS or PaaS.