SOAP :
It stands for Simple Object Access Protocol.
It is a protocol which follows a strict standards to allow communication between the server and the client.
It uses only XML for making requests and receiving responses which can increase it's complexity. Sometimes , there is a need to build those requests manually, which increases the chances of error.
It has built-in error handling which means it provides the information about the error in requests and responses which you can fix. It provides end-to-end reliability even through SOAP intermediaries
It requires high bandwidth for its usage. As request or response contains a lot of information inside of it, the amount of data transfer using SOAP is generally a lot.
It uses @WebService and it ensures ACID compliance transaction.
It provides pre-build extensibility in the form of the WS* standards and it also has SSL( Secure Socket Layer) and WS-security.
It works well in distributed enterprise environments.
It is more secure and used in the cases like Bank Account Password, Card Number, etc.
It provided more enterprise-level security features if you require them.
It supports HEAD, OPTIONS, TRACE and PATCH requests as well.
<?xml version="1.0"?>
<soap:Envelope
xmlns:soap="http://www.codehealed.com/2022/05/soap-envelope/"
soap:encodingStyle="http://www.codehealed.com/2022/05/soap-encoding">
...
Message information goes here
...
</soap:Envelope>
REST :
It stands for Representational State Transfer.
It is an architectural pattern which doesn't follow any strict standards but has some constraints to allow communication between the server and the client.
It is not restricted to XML only for making requests and receiving responses which makes it less complex. it supports the OpenAPI, Swagger and RAML formats.
REST HTTP requests are: POST, GET, PUT, and DELETE.
GET
Read or retrieve data
http://localhost:<PORT>/employee/id
POST
Add new data
http://localhost:<PORT>/employee/create
PUT
Update data that already exists
http://localhost:<PORT>/employee/patchFields
DELETE
Remove data
http://localhost:<PORT>/employee/idIt takes fewer resources and bandwidth. As request or response uses multiple standards like HTTP, JSON, URL, and XML for data communication and transfer.
It uses uri like @Path.
It provides SSL and HTTPS for security.
It lacks ACID compliance transaction.
It is optimized for the web. Using JSON as its data format makes it compatible with browsers.
It is more efficient as it provides excellent performance and scalability.
It can make use of SOAP as the underlying protocol for web services as it is just an architectural pattern.
It is closer to other web technologies in designing.
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