Do I need to replace my existing tools?

Almost never. The tools you already pay for and your team already knows are an asset, not an obstacle.

Automate around what you have

Most work involves connecting and automating your existing tools so information flows on its own - see system and data integration.

When replacement is worth it

Only when a tool genuinely can't integrate, is unreliable, or costs more than it returns. Because I have no preferred vendor, I'll tell you honestly which is the case.