What is paas?

• Hi friends in this article we are going to see what is paas.

• PAAS means Platform As A Service
• Paas is a cloud based environment. Here , We are discussing only Paas cloud services.
• We can build and deliver applications using Paas.
• From the above line we can understand that Paas will be useful to Application developers .

Before Paas, What are the things need to be managed by application developers while deploying apps ?
Applications
Data
Runtime
Middleware
O/S
Virtualization
Servers
Storage
Networking
If Paas used, What are the things need to be managed by application developers while deploying apps ?
Paas will handle the works of Runtime,Middleware,O/S,Virtualization,Servers,Storage,Networking and Application Developer can focus on Application and  Data.

How paas helps application developers?
1.Reduces overall cost & work
2.Saves time.
Paas Deployment Types:
Public Cloud Deployment
Private Cloud Deployment


Public Cloud Deployment
1.as resources will be shared to Multiple Application Developers
2.Suitable to less sensitive applications
3.More number of application developers use this deployment
Private Cloud Deployment
1.Paas resources will be shared to only one group of Application Developers.
2. Deployment have 2 choice.
2.1 Deploying in Application Developer’s on Premise/Data center. Needs more skills + cost for application developer
2.2.Deploying in Paas Provider datacenter.
3. Suitable to more sensitive applications
4.Less used deployment method
Hybrid Cloud Deployment
Combination of public cloud deployment and private cloud deployment

Difference between paas and saas

Paas manages	Saas manages
Runtime Middleware O/S Virtualization Servers Storage Networking 2.Helps to build apps for The application developer	Applications Data Runtime Middleware O/S Virtualization Servers Storage Networking 2.Delivers softwares/apps Through internet to user With an subscription

Difference between paas cloud services and paas software

Paas cloud services	Paas software
1.Cloud service providers Offers Paas to application developers 2.If application developers use Paas cloud service they can spend more time on building &  developing apps PAAS will take care of application developer remaining works	1.Creates Paas cloud service Used by cloud service providers 2.If application developers use this to create their own Paas service, they should have special skill ,need to put more effort ,time and have tendency to solve complex work.

Who are providing paas cloud services?
1.IBM
2.Microsoft Azure
3.Google
4.Amazon
5.Heroku
6.HP
7.Red Hat
All are providing Public Cloud Deployment types.
IBM also provides Private Cloud Deployment
Who are providing Paas Software?
1.Cloud Foundry
2.Red hat
3.Windows Azure
If application developer has more skills they can use this software for private cloud deployment

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