CMC Markets(LSE: CMCX) announced today (Monday) it has secured an extended technologypartnership with Westpac Banking Corporation, one of Australia's four majorbanks, to provide white-label trading platforms for the institution's retailshare trading services.Theagreement covers Westpac Share Trading and St.George Directshares, giving CMCaccess to Westpac's customer base of approximately 13 million clients.Integration work will take roughly 12 months to complete, with CMC expectingthe partnership to boost its Australian customer base by about 40% and increasedomestic trading volumes by approximately 45%.CMC Markets’ Customer BaseExpansion Targets 40% GrowthCMC MarketsStockbroking currently manages over A$90 billion in assets under administrationacross more than 1.2 million trading accounts, making it Australia'ssecond-largest stockbroking firm. The Westpac deal represents a significantexpansion of CMC's retail footprint in the Australian market.Westpaccustomers will gain access to CMC's trading technology through branded web andmobile platforms that integrate with the bank's existing digitalinfrastructure. The arrangement allows Westpac to maintain its customerrelationships while outsourcing the technical infrastructure to CMC.WestpacManaging Director for Private Wealth Ashley Stewart indicated the bankconducted an extensive review process before selecting CMC as its preferredtechnology vendor."CMCis a recognized market leader in online share trading. We look forward toextending our relationship with them to deliver innovative trading features anda leading user experience, integrated with our online banking for more of ourcustomers," Stewart said.The companyalso recently expanded its payment options globally, integrating Skrill andNeteller alongside traditional banking methods after previously operating abanking-only payment model.Revenue Impact ExpectedAfter Integration PeriodCMC plansto capitalize most integration costs over the 12-month implementation timeline,with management expecting "meaningful" revenue benefits for itsAustralian CMC Invest division once the platform goes live. The company saidongoing operational costs should remain manageable given its existingtechnology infrastructure and scale.Lord PeterCruddas, CMC Markets Group CEO, said the partnership validates the company'stechnology capabilities and represents "a very exciting" opportunityfor growth."Thereis no greater validation of our capabilities than when a major institutionplaces their trust in our technology to serve their valued customers,"Cruddas commented.Thetransaction requires no regulatory or shareholder approvals to proceed.In themeantime, Apex Financial acquired a stake exceeding 3% in CMC Markets, whilethe broker's top executives received over £21 million in share-based incentivesas part of compensation packages.Also check other Westpac-related stories:This article was written by Damian Chmiel at www.financemagnates.com.