What is the use of marketing cloud in salesforce?

Hi Sushant,

Marketing Cloud:

Salesforce Marketing Cloud is a customer relationship management (CRM) platform for marketers that allows them to create and manage marketing relationships and campaigns with customers.Marketing cloud is formerly known as 'ExactTarget'.

Services:

• Salesforce Marketing Cloud develops marketing automation and analytics software for email, mobile, social and online marketing.
• Salesforce Marketing Cloud also offers consulting and implementation services.
• The software is sold primarily on a multi-year subscription basis. The price of the subscription is based on what features are enabled, number of users and level of customer service.

For more details,you may go through following link:

https://www.salesforce.com/products/marketing-cloud/overview/