If you want the information that you are on vacation to be automatically conveyed to people who are trying to reach you, you can use at least the following methods:
When your vacation is confirmed, please make a calendar reservation for the duration of your vacation, and mark your status Show as: Out of office. This way people who invite you to meetings using calendar, see you are not available.
Create an absence notification using Outlook's Automatic Replies feature so that your response is visible in Teams with the absence icon and Outlook responds to emails sent to you (once per sender) with your automatic reply.
Consider whether you want automatic replies to be sent only to internal senders within your organization or also to those approaching you via email from outside your organization. You can limit the replies to be sent only to those in your address book.
Sending automatic replies (out of office) from Outlook
If you use the Elisa Ring app,
you can set the Presence state (Tilatieto) information to Holidays (Loma) > Other end time (Muu loppuaika) when you go on vacation, so that the person calling you will be answered with a notification stating your return date.
Remember to also clock out in Premitime with the Option Vacation when you go on vacation.