Unless you're working for a disreputable person or company, delivering new solutions that have clear business value does get noticed. It's rarely just one person behind a significant IT project, and leaders who spread the praise and credit around honestly will improve team loyalty and engagement.

If you're implementing technology whose main value is in preventing down-time or doing the same things for less cost or with much greater capacity, a good CIO/IT Director will have a communication vehicle they can use to keep the business aware of these new capabilities. Again, an honest improvement deserves to be noted and recognized.