IBM

You will get a lot of training opportunities and training materials.

You will get the opportunity to obtain a lot of certifications. The entire company is behind certifying employees in something, regardless of whether their job requires it or not.

Ample amount of projects are available.

You can be a star-performing resource only in IBM by doing nothing other than obtaining any meaningless certifications, having good personal relations with many colleagues while staying in the company for 20+ years, and by providing bootcamps or any training to people while wasting your time preparing for the training.

If you can hold your breath for 10 to 20 years in IBM, you will get the opportunity to settle down abroad and will become a manager. (Band growth will still be a question, though, after Band 8 or 9).

Opportunities take time to come to you mostly, unless you are lucky. However, you will get them for sure if you stay and keep doing what you do daily for the next 5 to 10 years at least.

Change the lower/mid-level people management. Cut the trend to only make managers who stayed in IBM for at least 10+ years.

IBM works on theory rather than in actual reality. The people who are driving the company are setting up theoretical strategies rather than setting up actually working ones.

Do modernization, but also see the feasibility of that new approach.

We talk a lot about modernization, but in reality, we are still working with the legacy.

Band growth is 0.01% in a 10-year timeframe.

Stop wasting your money on IBM Cloud and also on various certifications. Concentrate on the real employee's soft skill and technical/non-technical growth areas.

Lower management does not know how to treat skilled people and always tries to prove themselves correct and better than the newcomers. They talk/shout/make fun/blame the new resources who are really trying hard to make things better.