ServiceMax in Salesforce is nothing but a company that built a solution on top of the Salesforce platform, to help perform, field service. This solution is strong in work order management, workforce management and allows you to schedule field service engineers, based on the order of work relying on proximity, availability, and skills. This solution also has a mobile client to further extend its features. Serious about breaking into the career path of Salesforce, check out the Salesforce certification course from Intellipaat. Also, have a look at the Salesforce Tutorial YouTube video to help you better understand.