Three months sits in a sweet spot. It is long enough to cover the full digital marketing stack properly, and short enough that you do not put your career on hold for years. Whether it is worth it depends entirely on what fills those twelve weeks.
What 12 weeks can realistically cover
A well-designed 12-week curriculum can take a beginner through strategy, SEO, social media, paid advertising, content, email marketing, analytics and the AI tools that now sit underneath all of it - with a practical assignment in each area. That is roughly what a junior digital marketer touches in their first year on the job, compressed and structured.
Where short courses fail
The three-month courses that disappoint are the ones that are all theory: slides, quizzes, a certificate, goodbye. You finish with knowledge but no evidence and no experience, and the job market is unmoved. Before you pay for any short course, ask what you will have made by the end of it.
Training plus placement changes the maths
Our own answer to this question is Digital Marketing in Practice, our digital marketing course in London and live online: 12 weeks of hands-on training followed by a guaranteed 12-week placement, so the "course" is really six months and ends with workplace experience on your CV, a project portfolio and references. Compare that with what breaking into digital marketing normally takes and the value case is easy to see.
The bottom line
A three-month course is worth it when every week produces work you can show an employer, and when there is a bridge from the classroom into a real business. Judge any course - including ours - by those two tests.