ServiceNow offers free, full-featured Personal Developer Instances (PDI) to registered users who want to develop applications on the ServiceNow platform or improve their skills with ServiceNow. Members of the ServiceNow Developer Program can use their PDI as long as there is activity on the instance. Personal Developer Instance (PDI) Guide Introduction ServiceNow offers free Personal Developer Instances (PDIs) on the Developer Site to users who want to develop applications or improve their skills on the Now Platform. PDIs provide members with a single sandbox environment to experiment with the Now Platform and build greater value for their businesses. Sign in to the Developer site. Click the Request Instance button in the header. Select the Early Availability release for the instance. When the instance is assigned, the instance URL and the admin credentials are added to the My Instance page. Copy the admin password to the clipboard. User: admin. Password: