IaaS provides us with the raw infrastructure on cloud such as servers, storage, network. Gives us complete control over environment.
We are responsible for managing everything from OS to applications.
Provider is responsible only for providing the infrastructure such as network, firewall, security and own the hardwares.
Flexible Option - Clients can rent the servers from the providers.
Scalability Benefits - Allocate resources depending on the need or demand.
Reliable cloud features - disaster recovery, uptime assurance.
Just choose os, install softwares and services, end users get to use it.
Platform as a Service (PaaS):
It’s like moving into pre furnished apartment. The necessary infrastructure is already available, we focus on deployment and management of the application.
PaaS is built over IaaS, i.e. it has necessary infrastructure pre furnished such as servers and storage, Networking and firewalls, datacenters, PaaS also adds OS, DevOPs, DB management, analytical tools.
Focused on application developer context, relieves management of infrastructure.
Software as a Service (SaaS):
It’s like a streaming service, we just need internet to access the software.
Software is hosted and managed by the service provider.
This reduces the efforts and software maintenance and infrastructure management.
Reliance on external software that may not meet the need.
SaaS is built over IaaS and PaaS, i.e. it has necessary infrastructure and OSes, tools and DB along with the custom softwares.
