Bot with Graph API in Teams

Hello,

I wanted to develop a Bot for Teams with Graph API.

I referred many documentations , but still didn't get clear picture about this.

1. Can I build a bot with Graph API (in Teams) without explicit sign in. Since most of the articles are provided with Login option, I want something like single sign on when a bot is deployed in Teams.

2. If I build a bot in Azure with Graph API, how do i deploy it in Teams?

Please someone shed some light on this.

Thanks in Advance,

Sendil M