No. OnePlan is an independent platform rather than a Microsoft 365 add-on, so moving to it doesn’t require purchasing new Microsoft 365 licensing. It’s also not limited to the Microsoft ecosystem: OnePlan offers a wide range of integrations beyond Microsoft, including Jira, Asana, monday.com, Smartsheet, Trello, Wrike, Salesforce, SAP, and ServiceNow, plus thousands more through Zapier, in addition to its native Project, Planner, Power BI, and Teams integrations.