Can anyone provide me road-map to study for L2 Certification?
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Try this: kunalsharda.com/.../
1. Learn all the topics mentioned on this page -> https://community.appian.com/learn/certifications/p/senior-developer
2. There used to be a practice test, try to take it multiple times. Once you are confident go for the certification.
All the very best !!!
Appian academy is also have a several online videos for senior developer https://academy.appian.com/