- Bring your digital customer experience to a whole new level with Arch The digital competition is heating up across all sectors. Only with an exceptional customer experience can you win new, loyal customers in the long term. We serve as your partner as you transform your customer-oriented business processes for a digital world. Take advantage of our commerce, marketing, sales and service expertise in strategy, operations and management. Arch takes a holistic approach. We focus on your system’s users, process optimisation, revenue and digitalisation and advise you accordingly.