We use meetings every day for workshops, training, work, and many other things. There are many ways that you can use to join your Teams Meeting and the latest one is to use a Meeting ID. This method enables news scenarios and simplifies joining meetings, especially during IT Services Mergers and Acquisitions where users from multiple tenants or organizations need fast, low-friction collaboration.

A meeting ID and a passcode are automatically created each time you create an invitation for the meeting. You don’t need to configure it in Teams Admin Center or click any specific button. It is enabled by default and available both in Teams and Outlook. Joining a meeting with ID works for scheduled, channels, and ad-hoc meetings.

Using these codes, you can easily join a meeting without any invitation or entry in your calendar. It enables many new scenarios for Teams meetings (for example, sharing codes on a SharePoint page for an internal long-running meeting).

There is one more thing – this is not a security feature. A meeting is not protected by the codes. Every person with a link to the meeting can join it as usual. It is just one more method to joining a meeting. More information about all settings is available on the Microsoft page (https://learn.microsoft.com/en-us/microsoftteams/quick-start-meetings-live-events).

How to create Meeting ID in Teams

1. To create a meeting invitation, go to Teams Calendar and click New Meeting
2. Create a meeting with all required information (title, attendees, time) and click Send. Keep in mind that there must be at least one attendee to create an invitation.
3. Go to Calendar and Edit the meeting
4. Go to meeting info and copy the Meeting ID and Passcode

How to create Meeting ID in Outlook

1. Open your Outlook, click on the New Items dropdown and then select Meetings

2. Outlook generates a new meeting invitation with Meeting ID and Passcode. All that information is sent to recipients

How to use Meeting ID

1. Now you can join this meeting using only these 2 parameters. To do that go to Teams Calendar and click Join with an ID
2. Enter the Meeting ID and the Passcode and click

Summary

This method works in scheduled and ad-hoc meetings. You can use it whenever you want to share a meeting invitation without sending emails to all attendees or inviting them one by one (for example, a meeting with 30 attendees). You can also post meeting details on the project channel and meet with your colleagues.

which is especially useful during IT Services Mergers and Acquisitions where teams from different organizations need quick, consistent ways to collaborate.

Meeting codes are generated automatically from Teams and Outlook, and you do not need to remember to enable it or generate it manually. They are always inside the meeting details and ready to use when you need them.

For info on some other areas of Teams Meeting, Plz read the article:
Configure Auto-Recording in Teams Meetings (windowsmanagementexperts.com)