Tally is an accounting software that integrates business operations like sales, finance, purchasing, inventory and manufacturing. It provides accurate, up-to-date business information anywhere. The document discusses Tally's features like remote access, support center and security management. It also covers how to create companies, backup/restore data, ledgers, voucher types, balance sheets and profit and loss accounts in Tally. The hardware requirements for running Tally like Windows OS, RAM, disk space and processor are also mentioned.