Cloud-based services refer to the delivery of computing resources, software applications, and data storage over the internet from cloud service providers. These services are accessed remotely by users or organizations, eliminating the need for local infrastructure and allowing for on-demand access to a wide range of capabilities. Here are some common types of cloud-based services:

1. Infrastructure as a Service (IaaS):
   IaaS provides virtualized computing resources, including virtual machines, storage, networks, and servers, on a pay-as-you-go basis. Users have control over the operating systems, applications, and data running on the infrastructure, while the cloud provider manages the underlying hardware.
2. Platform as a Service (PaaS):
   PaaS offers a platform that includes pre-configured development tools, middleware, and runtime environments for building, deploying, and managing applications. Developers can focus on coding and application logic, while cloud providers take care of infrastructure management, scalability, and security.
3. Software as a Service (SaaS):
   SaaS is the subscription-based delivery of complete software applications over the Internet. Users access the software through her web browser or thin her client and requires no local installation or maintenance. Common examples include email services, customer relationship management (CRM) systems, and collaboration tools.
4. Database as a Service (DBaaS):
   DBaaS provides database management and hosting services in the cloud. Users can create, manage, and extend databases without installing or maintaining database software or infrastructure. It offers features such as automated backups, data replication, and high availability.
5. Storage as a Service (STaaS):
   STaaS provides a scalable and secure cloud storage solution. It allows users to store and retrieve data over the internet using storage her infrastructure managed by cloud providers. STaaS offers flexibility in terms of capacity, data durability, and access control options. 
6. Function as a Service (FaaS)/Serverless Computing:
   FaaS (Serverless Computing) allows developers to deploy and run individual functions and code snippets in the cloud without managing servers or infrastructure. Cloud providers dynamically allocate resources to perform functions as needed.
7. Backup and Disaster Recovery as a Service (BaaS/DRaaS):
   BaaS and DRaaS provide cloud-based backup and disaster recovery solutions. Data backup and replication are performed to the cloud to ensure data protection and enable rapid recovery in the event of data loss or system failure.

Cloud-based services offer many advantages such as scalability, cost efficiency, flexibility, and reduced maintenance. This enables businesses and individuals to leverage advanced technology, access resources as needed, and focus on their core competencies without requiring large upfront investments in infrastructure and software. increase. 

Cloud computing is the used as software development platforms,servers,storage and software,on the internet,through cloud. Companies offering these computing services are called cloud providers and typically charge for cloud computing services based on usage. 

TYPES OF CLOUD SERVICES: cloud computing services have three broad categories- 

1- Software as a service (Saas)

2- Platform as a service (PaaS)

3 Infrastructure as a service (IaaS)

SOFTWARE AS A SERVICE:  Software-as-a-Service (SaaS) is a way of delivering services and applications over the Internet. SaaS provides a complete software solution from cloud service provider. Most SaaS applications can be run directly from a web browser without any downloads. 

Advantages of SaaS: 

Cost Effective

Reduced time

Accessibility

Automatic updates

Scalability

The various companies providing software as a service are Cloud9 Analytics, Salesforce.com, Cloud Switch,Microsoft Office 365, Eloqua, dropBox and Cloud Tran .

PLATFORM AS A SERVICE:  PaaS is which kind of cloud computing that provides a platform to build applications and services over the internet.

Advantages of PaaS :

Simple and convenient for users

Cost Effective

Efficiently managing the lifecycle

Efficiency

This service are provided by Amazon Web services, Salesforce, Windows Azure, Google App Engine, cloud Bess and IBM smart cloud.

INFRASTRUCTURE AS A SERVICE:  Infrastructure as a service (IaaS) is a service model that delivers computer infrastructure on an outsourced basis to support various operations.

Advantages of IaaS :

Cost Effective

Website hosting

Security

Maintainence

Company provider Infrastructure as a service are Amazon webservices, Bluestack, IBM, Openstack, Rackspace and Vmware.