Service tax amendments broaden taxable services and add definitions, with transitional relief for payment penalties and implementation orders. The amendments redefine 'business entity' and 'port services', alter the scope of multiple clause (105) sub-clauses and insert new taxable services, enable inclusion of those services in section 66 by government notification, add an Explanation to section 73(3) exempting payment-made cases from penalty, and empower the Central Government under section 95 to issue one-year removal-of-difficulty orders; a related clause validates prior actions concerning taxing renting of immovable property.