PLDT Capital, the corporate venturing arm of telecommunications firm Philippine Long Distance Telephone Company, made a strategic investment reported by DealStreetAsia to be $5m in US-based digital commerce platform Matrixx Software on Wednesday. Matrixx raised approximately $24m from investors including Swisscom Ventures, the investment arm of telecoms company Swisscom, Innovacom, Adams Street Partners, Tugboat Partners and Greylock Partners through 2012, adding telecoms company Telstra’s Telstra Ventures unit as an investor two years later in a series C round of undisclosed…