What is a primary consideration when using Apex web service methods?

When utilizing Apex web service methods, it’s crucial to understand that the security context in which they operate differs from that of the standard Salesforce APIs. Apex web services run in the context of the user who is making the request, meaning that the access rights and permissions are defined by the profile of the user initiating the call. This is significant because it ensures that the Apex web service adheres to the organization’s security model, and it honors sharing rules, which affect the visibility of Salesforce records.

The security context directly impacts how data can be accessed and manipulated. For example, if a user lacks permission to view certain records due to their profile or role, the Apex web service will respect those limits. Thus, developers must architect their web services with these security considerations in mind to prevent unauthorized access to sensitive data.

In contrast, other choices do not hold true for Apex web service methods. For instance, authentication and authorization are necessary for accesses, access is not unlimited, and there are no restrictions on access to only internal users; external systems can also call these web services. Each aspect emphasizes the point that security is paramount when designing and implementing Apex web services within Salesforce.