Hi Madhukar, Data migration is simply related to transfer the same contents of data to some other orgs :: salesforce provided this feature because many times we need the same data in different orgs so through data migration we can have the same data in the desired org also you can use : Migration tool, Data Loader for achieving this goal also you can follow this link https://help.salesforce.com/apex/HTViewSolution?urlname=What-steps-are-needed-to-migrate-my-data-from-one-organization-to-another-1327109132359&language=en_US (https://help.salesforce.com/apex/HTViewSolution?urlname=What-steps-are-needed-to-migrate-my-data-from-one-organization-to-another-1327109132359&language=en_US)
Data migration is simply related to transfer the same contents of data to some other orgs :: salesforce provided this feature because many times we need the same data in different orgs so through data migration we can have the same data in the desired org also you can use : Migration tool, Data Loader for achieving this goal also you can follow this link https://help.salesforce.com/apex/HTViewSolution?urlname=What-steps-are-needed-to-migrate-my-data-from-one-organization-to-another-1327109132359&language=en_US (https://help.salesforce.com/apex/HTViewSolution?urlname=What-steps-are-needed-to-migrate-my-data-from-one-organization-to-another-1327109132359&language=en_US)