The global market for online degrees and micro-credentials is expected to reach $117 billion by 2025, as people become more adapted to e-learning settings. According to HRCP, a leading provider of human resource study materials, micro-credentials allow people to learn knowledge or skills in bite-sized chunks and pass an evaluation to earn a credential for a very specific skill or area. These credentials stack, allowing people to earn a digital badge once they've finished a certain set of micro-credentials. Digital badges can be displayed on the person's resume, email signature, or social media as proof of their achievement.