AIB has united its technology & data and operations & business services divisions into a single unit known as enterprise delivery.
The bank has appointed its chief technology officer, Graham Fagan, to oversee the combined divisions as part of an expanded chief operating officer brief.
In the new role, Fagan will lead enterprise delivery for the bank, which describes the integration as a key step in advancing a more cohesive, digitally-driven operating model.
AIB expects the move to enhance its resilience, agility and performance of services for customers and staff.
Fagan has been part of the bank's executive leadership team since 2023 and has led the transformation of its technology, data and operations channels.
He has also been credited with being central to the organisation's use of artificial intelligence.
AIB group general counsel Miriam Nagle has also joined the executive leadership team.
She will continue to provide legal counsel to the group and lead the legal division, but she will assume responsibility for third-party management activity.
Nagle began her legal career as a litigator specialising in advising on complex disputes across sectors.
Since joining AIB in 2013, she has held a number of senior legal roles.
The appointments are part of wider changes to AIB's management structure that are intended to simplify the bank's focus to three main business lines: retail banking, capital markets and climate capital.
AIB expects the consolidation will enhance its all-Ireland retail business offering across the island of Ireland and align its wholesale business lines to improve operational efficiencies and customer experience.
“I’m very pleased to announce Graham’s expanded role. He has shown innovation and an ability to deliver in his role as chief technology officer and will continue to do so in enterprise delivery," said Colin Hunt, chief executive of AIB.
"Miriam’s appointment to our executive leadership team recognises both her contribution and counsel since becoming group general counsel, and the broadening of her accountabilities announced today reflect her impact on the group.
"Both of these appointments are evidence of the ability that has been fostered and developed within the group. We look forward to their continued contributions.

"Additionally, today’s updates to our management structure mean AIB will focus on retail banking, capital markets and climate capital.
"This allows the bank to deliver on our strategic priorities of putting the customer first, greening our business and focusing on operational efficiency and resilience, meaning we can empower people to build a sustainable future.”
Photo: (l-r) Graham Fagan and Miriam Nagle. (Pic: Shane O'Neill, Coalesce)