What is IDaaS? Understanding Identity as a Service and Its Applications

Atualizado: agosto 31, 2026 Tempo de leitura: ~

TL;DR

Identity as a Service (IDaaS) is a cloud-based model where a third-party provider manages authentication and identity for enterprises. It supports capabilities like adaptive multi-factor authentication, single sign-on, and centralized user directories. Compared to on-premises identity infrastructure, IDaaS reduces costs, improves security, and simplifies administration — making it a scalable, future-ready solution for organizations of all sizes.

What is IDaaS?

Identity as a Service, or IDaaS is cloud-based authentication built and operated by a third-party provider. IDaaS companies supply cloud-based authentication or identity management to enterprises who subscribe. 

The X-as-a-service model in information technology is easy to understand. It means some feature is being delivered or served to a company through a remote connection from a third-party provider, as opposed to a feature being managed on site and by in-house personnel alone. Think of local email, such as Microsoft Outlook or Thunderbird, operating primarily on one's own computer versus cloud email, such as Gmail, being provided to users as a service through web connections. Identity, security, and other features can similarly be provided as a service.

What is the goal of an identity service?

The goal of an Identity Service is to ensure users are who they claim to be, and to give them the right kinds of access to software applications, files, or other resources at the right times. If the infrastructure to make this happen is built on site, then the company has to figure out what to do every time a problem comes up. If Bring Your Own Device (BYOD) employees are changing to different types of phones, for example, the local identity provisioning has to adapt immediately. It is much simpler to implement a centralized cloud-based system created by identity experts who have already solved such problems for hundreds of organizations.

What are the main applications of IDaaS?

IDaaS can be used for a number of different applications.

  • Adaptive multi-factor authentication (MFA): Adaptive multi-factor authentication is a feature where users submit multiple factors to gain entry to the network—thus increasing security over single-factor authentication—and access is granted dynamically, depending on how much risk users present.
  • Single sign-on (SSO): Single sign-on allows users to sign on only once at the network perimeter, and with that single effort, obtain access to whichever parts of the company's constellation of programs and resources are authorized. 
  • Universal Directory: Okta's Universal Directory is a central, cloud-based system for firms to ensure that only those users with the right security permissions can access restricted data.

These are just three examples of ways IDaaS can be used.

What are the benefits of IDaaS?

A chief advantage of IDaaS is savings. Provisioning identity on site, with software such as Active Directory Domain Services, can be full of costs. Your team has to:

  • Keep up servers
  • Purchase, upgrade, and install software
  • Back up data regularly
  • Pay hosting fees
  • Monitor the additional turf on premises for network security
  • Set up VPNs

With IDaaS, costs drop to the subscription fee and the administration work. That's it.

What ROI can organizations expect from IDaaS?

Besides savings, Return on Investment (ROI) for IDaaS includes:

  • Improved cybersecurity
  • Saved time with faster logins
  • Fewer password resets

Whether a user is signing in from open WiFi at an airport or from a desk in the office, the process is seamless and secure. The improved security can keep companies from facing a hack or breach that might topple their business.

Why is IDaaS considered the future of identity management?

Fundamentally, the cloud offers savings, efficiency, and expertise. Like network security monitoring or email search, identity can be moved to the cloud.

Interested in some real-world examples? Check out what others like Adobe, News Corp, and Flex have done. 

Frequently asked questions

What does IDaaS stand for?

IDaaS stands for Identity as a Service. It is cloud-based authentication built and operated by a third-party provider, supplying cloud-based authentication or identity management to enterprises who subscribe.

How does IDaaS differ from on-premises identity management?

With on-premises identity management, a company must keep up servers, purchase and install software, back up data, pay hosting fees, monitor network security on premises, and set up VPNs. With IDaaS, costs drop to the subscription fee and the administration work — eliminating the complexity of managing identity infrastructure in-house.

What is adaptive multi-factor authentication in the context of IDaaS?

Adaptive multi-factor authentication is a feature where users submit multiple factors to gain entry to the network — increasing security over single-factor authentication — and access is granted dynamically, depending on how much risk users present.

What is single sign-on (SSO) and how does IDaaS support it?

Single sign-on allows users to sign on only once at the network perimeter, and with that single effort, obtain access to whichever parts of the company's constellation of programs and resources are authorized. IDaaS providers deliver SSO as part of their cloud-based identity services.

What cost savings can organizations expect by switching to IDaaS?

Organizations that switch to IDaaS can eliminate the costs associated with on-premises identity management, including keeping up servers, purchasing and upgrading software, backing up data, paying hosting fees, monitoring network security on premises, and setting up VPNs. With IDaaS, costs drop to the subscription fee and the administration work.

Why is IDaaS considered a future-ready identity solution?

Fundamentally, the cloud offers savings, efficiency, and expertise. Like network security monitoring or email search, identity can be moved to the cloud — making IDaaS a scalable and forward-looking approach to identity management.

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