1) The document discusses overcoming barriers to forming regional health information organizations (RHIOs) such as cost, security, and lack of trust between competing healthcare entities. 2) It describes the experience of SEMRHIO, which developed a model using a "push" approach and hosted integration services to minimize costs for hospitals while building trust between organizations. 3) This approach extracts data from existing hospital systems in a flat file format and uses a centralized BizTalk server to convert it to HL7 format and store it for delivery to authorized recipients, reducing the need for on-site IT infrastructure.