OSLO: Mercell Holding (Mercell) delivered year-on-year revenue growth of 110% to NOK 68.4 million in the second quarter and 110% to NOK 125.4 million for the first half year 2020. Organic revenue growth was 34% in the second quarter. Annual Recurring Revenue (ARR) increased by 123% year-on-year to NOK 299 million at the end of…