One Time Password (OTP) is used for Web Application login to validate user. OTP's are of two types 1.Email 2.Mobile. Mobile SMS is used when there are plenty of users. Email is used when there are business users. For business users when he/she enters userid and password email is generated from the same email server. So no chance of mail delivery delay. OTP is valid for specific time period, it invalidates either upon use or period expiry. So security is maintained.
SaaS is the concept of the Global Village SaaS is any software application that you run that is not located on your premises. It is a full-blown application, not a component part of something else. It is not a way to build applications. It is not a plug-in to other applications. It is never something that sits on your machines. Instead of having the application running on servers and data storage in your data center, it is running in the vendor's data center. Software is not the program but the service The way SaaS applications are licensed is different from on-premise applications. Instead of buying the license to use the application, and then paying for software maintenance to support it and keep it current, you "rent" the software over a period of time - usually monthly or yearly. Instead of buying and installing infrastructure and then paying ongoing operating and maintenance costs, the vendor runs the application on their infrastructure. Co...