Complex sentence: Resources for the development of custom DDNS services are generally limited and involve a full development cycle to design and field a secure and robust DDNS server, allthough some pre made software products are available from companies that specializes in the development of secure custom DDNS services.
Split into simpler sentences: Resources for the development of custom DDNS services are generally limited and involve a full development cycle to design and field a secure and robust DDNS server. Some pre made software products are available from companies that specializes in the development of secure custom DDNS services.