Evolution and Transition: How Globus plans to make the transition to an Open Grid Service Architecture. In this presentation there will a very brief discussion of what OGSA/OGSI is and how it fits into the future plans of the Globus Toolkit. We will then discuss issues of support and transition from non-OGSI compliant components to their equivalent OGSI compliant components. Finally, time permitting, we will give a brief summary of OGSI-Agreement and the Data Services work that has recently been completed.