CRM software - Originally know for strengths as a marketing platform (hub ) that integrates social media and website Then later added on Sales (hub ) and Customer service ( hubs). However does not provide a truly integrated omnichannel solution to communicate with the end user. . Phone integration requires a third party for example.
Take a look at this short video on the 3 Hubs - Marketing , Sales and Customer service Hub .
Recently, Hubspot introduced Operations hub - To help automate your operations processes.