What does the Irish tax deal mean for multinationals?

Tech titans came to Ireland for its tax lures - but may now stay despite Dublin's agreement to raise its rates

• Ireland ends 12.5% tax rate in OECD global pact

Ireland has dropped its low-tax policy after months of wrangling over the fine print of an Organisation for Economic Co-operation and Development (OECD) agreement to operate a 15% minimum tax rate in more than 130 countries.

Why was Ireland key to a deal on taxing multinationals?