Remaining agile is one of the biggest challenges facing CIOs today, says Westpac Group tech chief Dave Curran. Describing his bank as a \u2018200-year-old startup\u2019, Curran said larger organisations needed to both work with Agile methodologies while leveraging their legacy processes. \u201cWe\u2019ve all gone Agile,\u201d he told IBM\u2019s Think Forum in Sydney. \u201cAnd we\u2019re all trying to make that happen, we\u2019re all trying to build things [using] Agile [methodologies]. But unless we free up the logic in our organisation, unless we API enable it, cloud enable it ... then you end up just being agile \u2013 you\u2019ve just rearranged your website, you\u2019ve just added a new widget to your mobile [app], you\u2019ve done a little more insight. \u201cBut you haven\u2019t actually leveraged the core DNA and logic you\u2019ve been building up over decades and centuries. And that race is on, because if you don\u2019t someone else is going to do it.\u201d Larger companies should be primed for change like start-ups but could fend off disruptors with their might and experience. \u201cYou don\u2019t live to 200 years as a company unless you\u2019re adaptable, unless you change,\u201d he said. \u201cWe\u2019re in a digital revolution right now, it\u2019s the next wave of change that we\u2019re facing, and if we don\u2019t think like a start-up \u2026 then we will be disrupted by everybody else. You can\u2019t lose your legacy, you can\u2019t lose your history and you can\u2019t lose your passion for your customers.\u201d \u201cWe\u2019re going to be continued to be nibbled away at by the start-ups and the disruptors. We have advantage \u2013 we have scale and experience and depth of knowledge \u2013 how do we turn that around and bring that agility to the customers how they need it rather than how we want to sell it? That\u2019s the biggest challenge.\u201d Curran also explained how the bank\u2019s information security efforts were increasingly introspective. \u201cSecurity used to be \u2013 protect the perimeter. Then it was \u2013 lock your front door and put the alarms on. Now we\u2019re assuming they\u2019re inside. Now you put sensors inside the house and make sure the safe is put behind a picture. \u201cThe same thing is happening in the world we work in that \u2013 assume they\u2019re inside, go looking, find them but before you find them, make sure you\u2019ve hidden what\u2019s really important so they can\u2019t find it.\u201d Data, Curran said, was increasingly a company\u2019s most valuable asset. \u201cWhy do people rob banks? It\u2019s where the money is. Why do people break into organisations? It\u2019s where the data is. Data has become the biggest asset in your company. \u201cThe flipside is how you protect it has become number one in terms of how you protect your business.\u201d Last year, Westpac Group announced it would be increasing its annual investment spend by 20 per cent to $1.3 billion with the bulk of it dedicated to technology, digital and simplification projects.