A web service is a software system designed to support interoperable machine-to-machine interaction over a network. Web services is a well-defined way for two computers to communicate with each other over the internet.
Drupal web services is always a good option for you
In Drupal, web service is being used to communicate with other web applications or mobile applications. Content can be shared and easily integrated with other applications as well.
Why use web services in Drupal?
Web services are useful because they present us with an architecture where a resource on a site (an image, textual content, such as a node ID or block ID, a video or audio file) is given a unique identifier.
For example, in Drupal, every node has an ID. Every file you upload to a Drupal site also has a unique path to it.
This is extremely useful since all applications share this common semantic standard. We name things similarly on all of our web applications.
Drupal services and real world examples
Here are some examples, perhaps we have to build a product site and they are developing a app for that product site in mobile, then we can pass data from web to mobile app using the web service. For example if the HR Department wants to integrate its job postings and applications with another web application such as job portals, web services can make this happen.
Advantages of Drupal web development services you can’t ignore
This leads to another advantage of using web services with Drupal and why we would choose to use Drupal in the first place. Instead of having to upload our photos twice—once to our Drupal site and then repeating the procedure to our some other applications, services allows us to upload the images to our Drupal site once and then automatically send that data over to other application which wants without having to upload one (or even a batch of images) again. It saves us time and speeds up the entire process of generating web-based content.
Building web services for Drupal 7
Drupal can use web services following any of the protocols mentioned earlier, including XML-RPC, REST, and SOAP. Drupal can consume web services by requesting data from other web applications using RSS and XML-formatted requests. As a Drupal developer, you can write your own service code in Drupal using PHP. You can also use the Services module as well as other service-specific contributed modules to create these web service requests.
Service module supports multiple interfaces like REST, XMLRPC, JSON, JSON-RPC, SOAP, AMF and more.
Make use of Drupal Services module for:
- Integration with core Drupal functionality like files, nodes, taxonomy, users, files and more.
- Response format API allows you to define response Formats for CONTENT-TYPE ie. application/json or application/xml. (also calls such as ENDPOINT/node/1.json work)
Additionally, all the communication between services, in our example between a client and a server, happens over HTTP (the standard web protocol). This is a uniform protocol that is used for transport and communication of the service. All transports take place uniformly using GET, POST, PUT, and DELETE requests, for example.
The HTTP requests are stand alone and occurs at one given moment and is isolated from all other activated requests. If HTTP requests works and gets a response, it succeeds. If HTTP requests doesn’t get response from the server or application it's communicating with, it fails. The requests can be repeated an infinite number of times.