A web service is a software system designed to support interoperable machine-to-machine interaction over a network. Web services use Extensible Markup Language (XML) messages that follow the SOAP standard and have been popular with traditional enterprise. Web API is a development in web services (in a movement called Web 2.0) where emphasis has been moving away from SOAP based services towards Representational State Transfer (REST) based communications. REST services do not require XML, SOAP, or WSDL service-API definitions.
Mind Source offer web service implementation. We offer third party web service implementation with your website. Several companies like Tourico, Travco and many others offer Web Services. They are very useful for business prospective.