I'm looking to upskill our team but need advice on the best WordPress course evaluation metrics. There are so many courses on the market, but few focus on advanced, enterprise-level skills like PWA or Headless architecture. Has anyone found a course that truly prepares developers for the kind of complex projects a top custom WordPress development company handles? We need training that goes deep into security, scalability, and performance optimization—not just basic theme building. Recommendations for advanced course providers or specific curriculum are appreciated!