The document analyzes the needs for creating a SAP PI integration platform at Vattenfall Sweden. It discusses Vattenfall's business environment undergoing changes due to energy market regulations. An analysis is presented of the options of SAP PI and Microsoft BizTalk for the integration platform. The analysis finds that while SAP PI should be used for SAP-to-SAP integration, BizTalk is more suitable currently due to lack of SAP PI expertise, its unclear roadmap, BizTalk's maturity, and avoiding vendor lock-in. The proposal is to use BizTalk for 1-2 years and monitor SAP PI's development to potentially switch to it if it becomes more mature and widely adopted.