To access Microsoft Teams via portal.office.com, log into the Office 365 portal using your work or school credentials. Once logged in, locate the Teams icon on the main dashboard or use the search bar to find it. Clicking the icon will launch the Teams web app, providing access to your chats, meetings, and files. If you frequently use Teams, consider pinning it for easy access. Additionally, integration with other Office apps like SharePoint and OneDrive is seamless through portal.office.com, enabling collaboration and document sharing without switching platforms. Ensure browser compatibility for optimal performance.