What is the fine-grained topic of the following text: “As we seek to expand our share of the growing global telecommunications sector, Samer’s extensive background and expertise in mobility services and in bringing new products and services to market will be instrumental in guiding our commercial operations to capitalize on new, fast growing applications,” said Intelsat CEO Stephen Spengler. Only return the topic.
Expansion of a telecommunications company with the help of a new executive's expertise.