What is a Service?
"Cloud services are infrastructure, platforms, or software that are hosted by third-party providers and made available to users through the internet."
"Cloud services facilitate the flow of user data from front-end clients (e.g., users’ servers, tablets, desktops, laptops—anything on the users’ ends), through the internet, to the provider’s systems, and back. Cloud services promote the building of cloud-native applications and the flexibility of working in the cloud. Users can access cloud services with nothing more than a computer, operating system, and internet connectivity."
"All infrastructure, platforms, software, or technologies that users access through the internet without requiring additional software downloads can be considered cloud computing services"
https://en.m.wikipedia.org/wiki/Server_(computing)
Server client vs peer to peer
Within web based services, this often means features that can be accessed by creating a user account. For some services, there are a single user, whereas others low for true multiuser environment. Services will often have their own interface, especially within a browser. Some may need to be configured through files, but many work with gui configuration.
"Anytime, anywhere access. Today’s workforce is mobile, and much of it is remote, so cloud services need to make data and applications available no matter what. Cloud services mean employees can work from anywhere and from any device, including mobile phones and tablets."
"With a simple online connection, users can access applications and services without having to house a lot of physical hardware or install software on their devices. "
Integration with Authelia, reverse proxy.
In relation to SaaS
https://en.m.wikipedia.org/wiki/Software_as_a_service
Docker vs service vs port
Free freemuim, subscription, usage based
Funding, advertising, selling consumer data
Many services offer apis
Federation
These remove the control of software from users and make them subscription based. You can't own a CD with the service available for install. There is only one version of the app, hosted by the service provider. Even extension apps only interact with the current version through API.
https://en.m.wikipedia.org/wiki/As_a_service
As a service business model, subscription based instead of something owned