As a service

"X as a service" (rendered as *aaS in acronyms) is a phrasal template for any business model in which a product use is offered as a subscription-based service rather than as an artifact owned and maintained by the customer. Originating from the software as a service concept that appeared in the 2010s with the advent of cloud computing, the template has expanded to numerous offerings in the field of information technology and beyond it. The term XaaS can mean "anything as a service".

The following is an alphabetical list of business models named in this way, including certain forms of cybercrime (criminal business models).

Database as a service (DBaaS)
With a database as a service model (DBaaS), users pay fees to a cloud provider for services and computing resources, reducing the amount of money and effort needed to develop and manage databases. Users are given tools to create and manage database instances, and control users. Some cloud providers also offer tools to manage database structures and data. Many cloud providers offer both relational (Amazon RDS, SQL Server) and NoSQL (MongoDB, Amazon DynamoDB) databases. This is a type of software as a service (SaaS).

Data management as a service (DMaaS)
Data management can also be done through the "as a service" business model, according to the book Data Management as a Service for Dummies.

Other "EaaS" business models
Under the acronym EaaS, the following business models have been discussed in journals and conferences:
 * Edge as a service
 * Encryption as a service
 * Energy as a service
 * Evaluation as a service