Question on 3LO Authentication

[LewsTherin]

Atlassian now advises all integrations towards a central 3LO OAuth model using a proxy app.
(https://www.atlassian.com/blog/developer/building-secure-and-scalable-integrations-our-guidance-for-third-party-apps).

Currently our customers use PAT for authentication. We plan to migrate to the proxy app by mid-February 2026.

Question:
1. Can we keep using PAT or OAuth using a custom app till mid-Febrauary '26?

2. Given we plan to migrate to 3LO proxy app, would you recommend moving from "PAT" authentication to "OAuth using custom app" in the meanwhile? (before our planned move to 3LO in mid-Feb)

[Shalini Pradhan · Accepted solution]

@LewsTherin ,

Good day! Welcome to Atlassian Community :)

Please share your cloud site URL for us to create a support ticket on your behalf.

Thank you

[LewsTherin]

https://jiraextint.atlassian.net/

Thank you!

[Shalini Pradhan]

@LewsTherin 

Hi, I checked the site and I dont see your name listed anywhere, neither as users or Site admin. Can you share the user name with which we can raise the support ticket?

[LewsTherin]

Can you use "Sai Shekhar". 
Thanks!

[Shalini Pradhan]

Hello @LewsTherin ,

Thank you! I have created a support ticket on behalf of Sai Shekhar. An engineer will reach out to you and assist you on the same.

[LewsTherin]

@Shalini Pradhan 
Can I ask for a link to the support ticket?
When can I expect an engineer to reach out by? I should stress that this is urgent for us as we are expecting the existing Basic Auth based integration to stop working in 15 days, (by 31 Dec). 

[Shalini Pradhan]

@LewsTherin 

Unfortunately, we wont be able to share the details of the support ticket in this community forum as its a public forum. However, upon checking I can see you had an interaction with our assigned engineer on the support ticket.

Thank you

[John Funk]

Hi Lews,

It is probably best that you open a support ticket with Atlassian for their help/guidance on this one. 

https://support.atlassian.com/contact/#/

Best of luck!

[LewsTherin]

Hi  John, Thanks for the reply!

It seems I need a Jira standard license to be able to open a support ticket. I don't have a Jira standard license but I do have many customers who are licensed and use my integration to connect with ServiceNow.

Is there any other way I can open ticket or request guidance?

[John Funk]

Sorry - I forgot to check that you were on the Free subscription. Let me see if I can get someone from Atlassian to come here. If you don't hear anything in 2 business days, add a bump here for me.