Architekturen

XaaS Everything as a Service

Application-specific

SaaS - Software

DaaS - Data

DBaaS - Database

Cloud Services

IaaS - Infrastrucutre

PaaS - platform, CaaS - Containers

Serverless - FaaS, (+CaaS), BaaS

Function as a Service (FaaS)

Stateless & Shortlived

high elastic scalability

triggered by external events

single functionality & responsiblity

pay per use

Function can for example run in a CaaS (Container)

Backend as a Service (BaaS)

FaaS hat nur Computing Ressourcen (fast) kein Storage.

Daher BaaS welche stateful ist mit low latency

Dafür zusätliche kosten.

Databases, Message brokers …

Platform as a Service (PaaS)

• Long Lived
• More Flexible resource models
• Language constrained

Container as a Service (CaaS)

• Long Lived
• More flexible resource models
• unconstrained runtime
• "serverless CaaS": short-lived, resource constraints
• often underlying PaaS/FaaS, especially "FaaS with contaniers"