grammar → 不論/無論…都/也…
TSUMUGU · TBCL 4 (est.) · 語法
不論/無論…都/也… grammar point · tier 1 · 不論/無論…都… no matter (which case) … still …
Whichever of the listed options holds, the same outcome follows across all of them.

字源 FORM what the parts do

論 sets words (言) beside 侖, slips gathered and laid in order — to take a thing apart case by case. 不 and 無 are both borrowed negations; here they cancel that sorting: the cases are listed but never told apart. 都 or 也 in the second clause then lands every listed case on one outcome.

故事 STORY a scene to remember it by

The slips lie in a row, each case spelled out. None gets sorted off from the others; the same verdict falls on all of them.
自撰字源記憶法
框 · Frame
不論/無論 [open clause: A 還是/或 B / question-word / A 不 A],[subj] 都/也 [outcome]
觸 · Trigger
You want to say the outcome holds the same across every option you list, in a written or formal register.
序 · The move
1After 不論 / 無論, lay out the open clause — A 還是/或 B, a question-word (什麼/誰/多少), or an A 不 A.Is the clause genuinely open? A single fixed fact takes 雖然, not 不論.
2Put 都 (or 也) before the predicate of the second clause.Does the answering adverb sit after its subject and before the verb?
3State the one outcome that holds across every listed case.Would that outcome stay unchanged whichever case from the list you pick?
例 · Examples
1近年來不論no matter企業或個人companies or individuals (the listed cases),使用網路的情況in every case越來越普遍more and more common
In recent years, no matter whether companies or individuals, the use of the internet has grown ever more common across the board.
界 · Boundary
不管…都…
Same construction and same sweep; 不論/無論 is the written, formal register, 不管 the everyday spoken one. Swap freely in speech, prefer 不論/無論 in writing.
雖然…但是…
不論 takes an OPEN list (alternatives, a question-word, or A-not-A) and keeps one outcome across all of them; 雖然 takes a single SETTLED fact and then turns against it.
如果…就…
如果 picks ONE condition and gives ONE consequence; 不論 covers EVERY case on the list and gives the same consequence regardless.
無論你累,都要做完。 ✗ → 無論你累不累,都要做完。 ✓ (the 無論 clause must be open: A-not-A, alternatives, or a question-word)
不論是企業或個人,使用網路的情況越來越普遍。 ✗ → 不論是企業或個人,使用網路的情況都越來越普遍。 ✓ (都 in the second clause is obligatory)
無論下雨,我也去。 ✗ → 無論下不下雨,我也去。 ✓ (a bare fact takes 雖然; 不論 needs the case opened up)
English "no matter what/who/when" needs no answering adverb, so learners drop the obligatory 都/也 in the second clause.