Yes, Most of the top companies use Salesforce for their core operations. Salesforce is serving its services to the customers of 150000 companies, comprising of small scale, medium scale and large scale enterprises and all of them requires Salesforce professionals.
Big Companies examples are like Google, HCL, Facebook and the others use the Salesforce. All the companies are using the Salesforce CRM for their core operations.
Salesforce was rated the world’s 1st CRM for the two consecutive years and they rightly deserved it. A question arises why the companies prefer the salesforce because Salesforce is one of the best CRMs to work with. If are not like the layout of anything on the page then you can customize it by simply drag & dropping of fields.
Do you want fields to be auto-calculated? Sure, you can use formula fields to do that. If you want the data in certain fields is to be in a particular format, then you can use validation rules to ensure that happens.
And if you want to automate emails and actions, then you can use workflows and approval processes. Now, the best part is that it can be used across all the domains. Be it finance, or HR, or Call Centers or IT.
If you want to learn more about the various aspects of the Salesforce CRM then read out this blog What Is Salesforce? A Beginners Guide To Salesforce.